Common Weakness Enumeration

CWE-787

Allowed-with-Review

Out-of-bounds Write

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product writes data past the end, or before the beginning, of the intended buffer.

15763 vulnerabilities reference this CWE, most recent first.

CVE-2026-88053 (GCVE-0-2026-88053)

Vulnerability from cvelistv5 – Published: 2026-09-10 17:38 – Updated: 2026-09-10 17:38

Title

Tesseract: Heap out-of-bounds write in Classify::ReadIntTemplates via unvalidated counts in crafted .traineddata

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Classify::ReadIntTemplates in src/classify/intproto.cpp reads NumClassPruners, NumClasses, and NumProtoSets from the TESSDATA_INTTEMP component of a crafted .traineddata file and uses those values as loop bounds without validating them against MAX_NUM_CLASS_PRUNERS, MAX_NUM_CLASSES, and MAX_NUM_PROTO_SETS. The loops store heap pointers into fixed-capacity ClassPruners and ProtoSets arrays in INT_TEMPLATES_STRUCT and INT_CLASS_STRUCT, so an oversized count causes heap out-of-bounds pointer writes during legacy-classifier initialization before OCR begins, resulting in heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

Severity

8.6 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Classify::ReadIntTemplates in src/classify/intproto.cpp reads NumClassPruners, NumClasses, and NumProtoSets from the TESSDATA_INTTEMP component of a crafted .traineddata file and uses those values as loop bounds without validating them against MAX_NUM_CLASS_PRUNERS, MAX_NUM_CLASSES, and MAX_NUM_PROTO_SETS. The loops store heap pointers into fixed-capacity ClassPruners and ProtoSets arrays in INT_TEMPLATES_STRUCT and INT_CLASS_STRUCT, so an oversized count causes heap out-of-bounds pointer writes during legacy-classifier initialization before OCR begins, resulting in heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T17:38:58.271Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-rphx-x795-5qjv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-rphx-x795-5qjv"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/8b0574680f3b22f246ade6a4c8e3029104255c63",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/8b0574680f3b22f246ade6a4c8e3029104255c63"
        }
      ],
      "source": {
        "advisory": "GHSA-rphx-x795-5qjv",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in Classify::ReadIntTemplates via unvalidated counts in crafted .traineddata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-88053",
    "datePublished": "2026-09-10T17:38:58.271Z",
    "dateReserved": "2026-09-09T21:22:45.434Z",
    "dateUpdated": "2026-09-10T17:38:58.271Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88052 (GCVE-0-2026-88052)

Vulnerability from cvelistv5 – Published: 2026-09-10 17:38 – Updated: 2026-09-10 17:38

Title

Tesseract: Heap out-of-bounds write in UNICHARSET::load_via_fgets via count/insert desynchronization

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, UNICHARSET::load_via_fgets in src/ccutil/unicharset.cpp trusts the declared unichar count as a loop bound and uses id as an unchecked index into the unichars vector. unichar_insert_backwards_compatible can leave the vector unchanged for an empty, duplicate, or already-encodable representation, causing id to become larger than unichars.size(). Subsequent set_* calls and the write to unichars[id].properties.enabled then write UNICHAR_PROPERTIES beyond the vector during initialization in both the default LSTM and legacy engines, causing heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-129 - Improper Validation of Array Index
CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, UNICHARSET::load_via_fgets in src/ccutil/unicharset.cpp trusts the declared unichar count as a loop bound and uses id as an unchecked index into the unichars vector. unichar_insert_backwards_compatible can leave the vector unchanged for an empty, duplicate, or already-encodable representation, causing id to become larger than unichars.size(). Subsequent set_* calls and the write to unichars[id].properties.enabled then write UNICHAR_PROPERTIES beyond the vector during initialization in both the default LSTM and legacy engines, causing heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-129",
              "description": "CWE-129: Improper Validation of Array Index",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T17:38:04.675Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-2hm8-q5c7-c373",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-2hm8-q5c7-c373"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/2d04d640db2e8c7e3bab2369d599343b5a8b8443",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/2d04d640db2e8c7e3bab2369d599343b5a8b8443"
        }
      ],
      "source": {
        "advisory": "GHSA-2hm8-q5c7-c373",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in UNICHARSET::load_via_fgets via count/insert desynchronization"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-88052",
    "datePublished": "2026-09-10T17:38:04.675Z",
    "dateReserved": "2026-09-09T21:22:45.433Z",
    "dateUpdated": "2026-09-10T17:38:04.675Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88051 (GCVE-0-2026-88051)

Vulnerability from cvelistv5 – Published: 2026-09-10 17:37 – Updated: 2026-09-10 17:37

Title

Tesseract: Heap out-of-bounds write in GenericVector<T>::read due to independent reserved/size_used_ fields

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the backing array, but the callback loop writes size_used_ elements. A crafted TESSDATA_INTTEMP component with version_id 4 or later can therefore set reserved to a small value and size_used_ to a large value when fontinfo_table_.read(fp, read_info) is called from src/classify/intproto.cpp, causing a heap out-of-bounds write of FontInfo structures, heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

Severity

8.6 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the backing array, but the callback loop writes size_used_ elements. A crafted TESSDATA_INTTEMP component with version_id 4 or later can therefore set reserved to a small value and size_used_ to a large value when fontinfo_table_.read(fp, read_info) is called from src/classify/intproto.cpp, causing a heap out-of-bounds write of FontInfo structures, heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T17:37:01.063Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0"
        }
      ],
      "source": {
        "advisory": "GHSA-88qp-4g94-3rf3",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in GenericVector\u003cT\u003e::read due to independent reserved/size_used_ fields"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-88051",
    "datePublished": "2026-09-10T17:37:01.063Z",
    "dateReserved": "2026-09-09T21:22:45.433Z",
    "dateUpdated": "2026-09-10T17:37:01.063Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88050 (GCVE-0-2026-88050)

Vulnerability from cvelistv5 – Published: 2026-09-10 16:24 – Updated: 2026-09-10 17:30

Title

Tesseract: Out-of-bounds write in UnicharCompress via unvalidated recoder code values

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and reliably causes a wild-address crash or allocation failure on the default LSTM engine. No fixed release is available as of this review.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 17:28 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-88050",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T17:28:04.777181Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-10T17:30:29.252Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7v9h-3q3m-w68g"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and reliably causes a wild-address crash or allocation failure on the default LSTM engine. No fixed release is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
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            "vulnIntegrityImpact": "NONE"
          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-787: Out-of-bounds Write",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T16:24:21.331Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7v9h-3q3m-w68g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7v9h-3q3m-w68g"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/c94a5532ee04db5a4919542832fd94caee5ea58f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/c94a5532ee04db5a4919542832fd94caee5ea58f"
        }
      ],
      "source": {
        "advisory": "GHSA-7v9h-3q3m-w68g",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Out-of-bounds write in UnicharCompress via unvalidated recoder code values"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-88050",
    "datePublished": "2026-09-10T16:24:21.331Z",
    "dateReserved": "2026-09-09T21:22:45.433Z",
    "dateUpdated": "2026-09-10T17:30:29.252Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88049 (GCVE-0-2026-88049)

Vulnerability from cvelistv5 – Published: 2026-09-10 16:23 – Updated: 2026-09-10 17:13

Title

Tesseract: Heap out-of-bounds write in LSTM::Forward via na_/gate-matrix dimension mismatch

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, prior .traineddata hardening added bounds checks to NetworkIO::CopyTimeStepGeneral and NetworkIO::Randomize in src/lstm/networkio.cpp but left NetworkIO::WriteTimeStepPart and NetworkIO::AddTimeStepPart unchecked. In LSTM::Forward in src/lstm/lstm.cpp, source_ is sized from the independently deserialized na_ field while the WriteTimeStepPart count is ns_, which comes from the CI gate WeightMatrix dim1() value. A crafted NT_LSTM layer can make ns_ much larger than na_, causing a heap out-of-bounds write during the first recognition step on the default LSTM engine and resulting in heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

Severity

8.6 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 17:12 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-88049",
                "options": [
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                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T17:12:06.792549Z",
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          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
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              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, prior .traineddata hardening added bounds checks to NetworkIO::CopyTimeStepGeneral and NetworkIO::Randomize in src/lstm/networkio.cpp but left NetworkIO::WriteTimeStepPart and NetworkIO::AddTimeStepPart unchecked. In LSTM::Forward in src/lstm/lstm.cpp, source_ is sized from the independently deserialized na_ field while the WriteTimeStepPart count is ns_, which comes from the CI gate WeightMatrix dim1() value. A crafted NT_LSTM layer can make ns_ much larger than na_, causing a heap out-of-bounds write during the first recognition step on the default LSTM engine and resulting in heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            {
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              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T16:23:18.718Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-jgq8-pprg-vc68",
          "tags": [
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          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-jgq8-pprg-vc68"
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          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/tesseract-ocr/tesseract/commit/b494ac18925f9d9aff9ef5815475de9943ab19bf"
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      ],
      "source": {
        "advisory": "GHSA-jgq8-pprg-vc68",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in LSTM::Forward via na_/gate-matrix dimension mismatch"
    }
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "dateReserved": "2026-09-09T21:22:45.433Z",
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  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-88048 (GCVE-0-2026-88048)

Vulnerability from cvelistv5 – Published: 2026-09-10 16:21 – Updated: 2026-09-10 16:21

Title

Tesseract: Heap out-of-bounds write/read in FullyConnected::Forward via layer/weight-matrix dimension mismatch

Summary

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, FullyConnected::DeSerialize in src/lstm/fullyconnected.cpp does not validate the deserialized layer scalars ni_ and no_ against the weight-matrix dimensions. During FullyConnected::Forward, MatrixDotVector in src/lstm/weightmatrix.cpp writes w.dim1() results into temp_line, which is sized from no_, and reads w.dim2() minus one inputs from curr_input, which is sized from ni_. A crafted .traineddata NT_SOFTMAX layer can therefore use inconsistent dimensions to cause a heap out-of-bounds write and read on the default LSTM engine, resulting in heap corruption, a crash, information disclosure, or potentially controlled corruption. No fixed release is available as of this review.

Severity

8.6 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-125 - Out-of-bounds Read
CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tesseract-ocr	tesseract	Affected: <= 5.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tesseract",
          "vendor": "tesseract-ocr",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 5.5.3"
            }
          ]
        }
      ],
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        {
          "lang": "en",
          "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, FullyConnected::DeSerialize in src/lstm/fullyconnected.cpp does not validate the deserialized layer scalars ni_ and no_ against the weight-matrix dimensions. During FullyConnected::Forward, MatrixDotVector in src/lstm/weightmatrix.cpp writes w.dim1() results into temp_line, which is sized from no_, and reads w.dim2() minus one inputs from curr_input, which is sized from ni_. A crafted .traineddata NT_SOFTMAX layer can therefore use inconsistent dimensions to cause a heap out-of-bounds write and read on the default LSTM engine, resulting in heap corruption, a crash, information disclosure, or potentially controlled corruption. No fixed release is available as of this review."
        }
      ],
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
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          "descriptions": [
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              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
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            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T16:21:57.587Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff"
        }
      ],
      "source": {
        "advisory": "GHSA-q44c-23p6-5mw6",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write/read in FullyConnected::Forward via layer/weight-matrix dimension mismatch"
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    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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}

CVE-2026-86510 (GCVE-0-2026-86510)

Vulnerability from cvelistv5 – Published: 2026-09-08 01:15 – Updated: 2026-09-08 16:04

Title

D-Link DIR-822A L2TP Control Message tunnel_set_params out-of-bounds write

Summary

A vulnerability has been found in D-Link DIR-822A A_101. Affected is the function tunnel_set_params of the component L2TP Control Message Parser. Such manipulation leads to out-of-bounds write. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Severity

9.4 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

9.9 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 16:04 UTC

CWE

CWE-787 - Out-of-bounds Write
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/vuln/399663	vdb-entrytechnical-description
https://vuldb.com/vuln/399663/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86510	third-party-advisory
https://vuldb.com/submit/906300	third-party-advisory
https://tzh00203.notion.site/D-Link-DIR-822A-L2TP…	exploit
https://www.dlink.com/	product

Impacted products

1 product

Vendor	Product	Version
D-Link	DIR-822A	Affected: A_101 cpe:2.3:h:d-link:dir-822a::::::::

Credits

tian (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
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          "versions": [
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      "credits": [
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          "lang": "en",
          "type": "reporter",
          "value": "tian (VulDB User)"
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      "metrics": [
        {
          "cvssV4_0": {
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          "time": "2026-09-07T20:49:12.000Z",
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}

CVE-2026-86313 (GCVE-0-2026-86313)

Vulnerability from cvelistv5 – Published: 2026-09-07 02:03 – Updated: 2026-09-08 15:27

Summary

Out-of-bounds write vulnerability in Samsung Opensource Walrus allows Overflow Buffers. This issue affects Walrus: af80e665ea49d9003695a66502f841ed1d8397e7.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:27 UTC

CWE

CWE-787 - Out-of-bounds write

Assigner

samsung.tv_appliance mitre root

References

1 reference

URL	Tags
https://github.com/Samsung/walrus/pull/482

Impacted products

1 product

Vendor	Product	Version
Samsung Opensource	Walrus	Affected: af80e665ea49d9003695a66502f841ed1d8397e7

Credits

Abdelrhman Allam

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-86313",
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                  },
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                    "Technical Impact": "total"
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          "product": "Walrus",
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          "capecId": "CAPEC-100",
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CVE-2026-86098 (GCVE-0-2026-86098)

Vulnerability from cvelistv5 – Published: 2026-09-04 22:38 – Updated: 2026-09-04 22:38

Title

ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape

Summary

ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.

Severity

8.3 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/ntop/nDPI/commit/94e82c1de1232…	patch
https://github.com/ntop/nDPI	product
https://github.com/ntop/nDPI/blob/5.0/src/lib/ndp…	technical-description
https://www.vulncheck.com/advisories/ntop-ndpi-be…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
ntop	nDPI	Affected: 0 , < 6.0 (custom) Unaffected: 6.0 (custom) cpe:2.3:a:ntop:ndpi::::::::

Date Public

2026-08-25 00:00

Credits

Tristan Madani

Show details on NVD website

JSON

To clipboard

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CVE-2026-86095 (GCVE-0-2026-86095)

Vulnerability from cvelistv5 – Published: 2026-09-04 22:38 – Updated: 2026-09-08 17:45

Title

Unidata netcdf-c through 4.10.1 Out-of-bounds Write via Oversized HDF5 Attribute Name

Summary

Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversized attribute names to overflow the destination buffer, causing memory corruption and crashes when applications enumerate attribute names.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 17:44 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://github.com/Unidata/netcdf-c	product
https://github.com/Unidata/netcdf-c/blob/v4.10.1/…	technical-description
https://www.vulncheck.com/advisories/unidata-netc…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Unidata	netcdf-c	Affected: 0 , ≤ 4.10.1 (custom) cpe:2.3:a:unidata:netcdf::::::::

Credits

Michael Holmquist

Show details on NVD website

JSON

To clipboard

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Mitigation MIT-3

Requirements

Strategy: Language Selection

Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.

Mitigation MIT-4.1

Architecture and Design

Strategy: Libraries or Frameworks

Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.

Mitigation MIT-10

Operation Build and Compilation

Strategy: Environment Hardening

Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.

Mitigation MIT-9

Implementation

Consider adhering to the following rules when allocating and managing an application's memory:
Double check that the buffer is as large as specified.
When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.

Mitigation MIT-11

Operation Build and Compilation

Strategy: Environment Hardening

Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

Mitigation MIT-12

Operation

Strategy: Environment Hardening

Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].

Mitigation MIT-13

Implementation

Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.

No CAPEC attack patterns related to this CWE.

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