Vulnerability-Lookup

RHSA-2026:67832

Vulnerability from csaf_opensuse - Published: 2026-09-16 00:00 - Updated: 2026-09-16 18:52

Summary

security update for tesseract

Severity

Important

Notes

Title of the patch: security update for tesseract

Description of the patch: This security update provides a functional equivalent of RHSA-2026:67832. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2026:67832.

Patchnames: RHSA-2026:67832

CVE-2026-73066

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 8:tesseract-4.1.1-3.el8_10.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:tesseract-4.1.1-3.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:tesseract-devel-4.1.1-3.el8_10.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:tesseract-devel-4.1.1-3.el8_10.x86_64	—	Vendor Fix

Threats

Impact not set

References

4 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2026-73066/	self
https://www.suse.com/security/cve/CVE-2026-73066	external

JSON

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{
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      "text": "Important"
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    }
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  "product_tree": {
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                "product": {
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                    "cpe": "cpe:/o:suse:sll:8"
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  "vulnerabilities": [
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      "cve": "CVE-2026-73066",
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        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract\u0027s deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3.",
          "title": "CVE description"
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          "SUSE Liberty Linux 8:tesseract-4.1.1-3.el8_10.x86_64",
          "SUSE Liberty Linux 8:tesseract-devel-4.1.1-3.el8_10.i686",
          "SUSE Liberty Linux 8:tesseract-devel-4.1.1-3.el8_10.x86_64"
        ]
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          "summary": "CVE-2026-73066",
          "url": "https://www.suse.com/security/cve/CVE-2026-73066"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:tesseract-4.1.1-3.el8_10.i686",
            "SUSE Liberty Linux 8:tesseract-4.1.1-3.el8_10.x86_64",
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            "SUSE Liberty Linux 8:tesseract-devel-4.1.1-3.el8_10.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-16T00:00:00Z",
          "details": "not set"
        }
      ],
      "title": "CVE-2026-73066"
    }
  ]
}

CVE-2026-73066 (GCVE-0-2026-73066)

Vulnerability from cvelistv5 – Published: 2026-08-11 14:49 – Updated: 2026-08-11 15:36

Title

Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata

Summary

Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3.

Severity

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 15:31 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/tesseract-ocr/tesseract/securi…	x_refsource_CONFIRM
https://github.com/tesseract-ocr/tesseract/pull/4588	x_refsource_MISC
https://github.com/tesseract-ocr/tesseract/commit…	x_refsource_MISC
https://github.com/tesseract-ocr/tesseract/releas…	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-2026-73066",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T15:31:52.040987Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-11T15:36:09.326Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "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. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract\u0027s deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T14:49:16.817Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/pull/4588",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/pull/4588"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3"
        }
      ],
      "source": {
        "advisory": "GHSA-7j76-5rq5-5jg8",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-73066",
    "datePublished": "2026-08-11T14:49:16.817Z",
    "dateReserved": "2026-08-10T19:37:41.443Z",
    "dateUpdated": "2026-08-11T15:36:09.326Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.