Vulnerability-Lookup

FKIE_CVE-2026-7827

Vulnerability from fkie_nvd - Published: 2026-10-09 05:16 - Updated: 2026-10-09 05:16

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values.

References

	URL	Tags
	33c584b5-0579-4c06-b2a0-8d8329fcab9c	https://github.com/FalkorDB/FalkorDB/commit/7d15431aadf37588fadc2578b90c3afb5e8daa94
	33c584b5-0579-4c06-b2a0-8d8329fcab9c	https://github.com/FalkorDB/FalkorDB/pull/1973
	33c584b5-0579-4c06-b2a0-8d8329fcab9c	https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com/FalkorDB/FalkorDB",
          "cpes": [
            "cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "RDB serializer / graph decoder"
          ],
          "product": "FalkorDB",
          "programFiles": [
            "src/serializers/decoders/current/v19/decode_graph_entities.c",
            "src/serializers/decoders/prev/v18/decode_graph_entities.c",
            "src/serializers/decoders/prev/v17/decode_graph_entities.c",
            "src/serializers/decoders/prev/v16/decode_graph_entities.c",
            "src/serializers/decoders/prev/v15/decode_graph_entities.c",
            "src/serializers/decoders/prev/v14/decode_graph_entities.c",
            "src/serializers/decoders/prev/v13/decode_graph_entities.c",
            "src/serializers/decoders/prev/v12/decode_graph_entities.c",
            "src/serializers/decoders/prev/v11/decode_graph_entities.c",
            "src/serializers/decoders/prev/v10/decode_graph_entities.c"
          ],
          "programRoutines": [
            {
              "name": "_RdbLoadEntity"
            }
          ],
          "repo": "https://github.com/FalkorDB/FalkorDB",
          "vendor": "FalkorDB",
          "versions": [
            {
              "lessThan": "4.18.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values."
    }
  ],
  "id": "CVE-2026-7827",
  "lastModified": "2026-10-09T05:16:45.447",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-09T05:16:45.327",
  "references": [
    {
      "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
      "url": "https://github.com/FalkorDB/FalkorDB/commit/7d15431aadf37588fadc2578b90c3afb5e8daa94"
    },
    {
      "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
      "url": "https://github.com/FalkorDB/FalkorDB/pull/1973"
    },
    {
      "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
      "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.4"
    }
  ],
  "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
      "type": "Secondary"
    }
  ]
}

CVE-2026-7827 (GCVE-0-2026-7827)

Vulnerability from cvelistv5 – Published: 2026-10-09 04:04 – Updated: 2026-10-09 04:04

Title

Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB

Summary

Severity

9.2 (Critical)


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

8.1 (High)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

securin CNA under the mitre root

CNA scorecard B 80/100 over 70 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/FalkorDB/FalkorDB/pull/1973	patch
https://github.com/FalkorDB/FalkorDB/commit/7d154…	patch
https://github.com/FalkorDB/FalkorDB/releases/tag…	release-notes

Impacted products

1 product

Vendor	Product	Version
FalkorDB	FalkorDB	Affected: 0 , < 4.18.4 (semver) cpe:2.3:a:falkordb:falkordb::::::::

Credits

Arjun Basnet from Securin

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/FalkorDB/FalkorDB",
          "cpes": [
            "cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "RDB serializer / graph decoder"
          ],
          "product": "FalkorDB",
          "programFiles": [
            "src/serializers/decoders/current/v19/decode_graph_entities.c",
            "src/serializers/decoders/prev/v18/decode_graph_entities.c",
            "src/serializers/decoders/prev/v17/decode_graph_entities.c",
            "src/serializers/decoders/prev/v16/decode_graph_entities.c",
            "src/serializers/decoders/prev/v15/decode_graph_entities.c",
            "src/serializers/decoders/prev/v14/decode_graph_entities.c",
            "src/serializers/decoders/prev/v13/decode_graph_entities.c",
            "src/serializers/decoders/prev/v12/decode_graph_entities.c",
            "src/serializers/decoders/prev/v11/decode_graph_entities.c",
            "src/serializers/decoders/prev/v10/decode_graph_entities.c"
          ],
          "programRoutines": [
            {
              "name": "_RdbLoadEntity"
            }
          ],
          "repo": "https://github.com/FalkorDB/FalkorDB",
          "vendor": "FalkorDB",
          "versions": [
            {
              "lessThan": "4.18.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Arjun Basnet from Securin"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T04:04:29.094Z",
        "orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
        "shortName": "securin"
      },
      "references": [
        {
          "name": "FalkorDB PR #1973",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/FalkorDB/FalkorDB/pull/1973"
        },
        {
          "name": "Fix commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/FalkorDB/FalkorDB/commit/7d15431aadf37588fadc2578b90c3afb5e8daa94"
        },
        {
          "name": "FalkorDB 4.18.4 release notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.4"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade FalkorDB to version 4.18.4 or later."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-24T00:00:00.000Z",
          "value": "Reported to FalkorDB"
        },
        {
          "lang": "en",
          "time": "2026-05-05T00:00:00.000Z",
          "value": "CVE ID shared with the vendor"
        },
        {
          "lang": "en",
          "time": "2026-05-07T00:00:00.000Z",
          "value": "Fix merged by the vendor (PR #1973)"
        },
        {
          "lang": "en",
          "time": "2026-05-07T00:00:00.000Z",
          "value": "FalkorDB 4.18.4 released with the fix"
        }
      ],
      "title": "Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB",
      "workarounds": [
        {
          "lang": "en",
          "value": "Require authentication on the Redis/FalkorDB instance (requirepass or ACLs), restrict or rename the REPLICAOF/SLAVEOF commands so untrusted clients cannot use them, and do not expose the instance to untrusted networks."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
    "assignerShortName": "securin",
    "cveId": "CVE-2026-7827",
    "datePublished": "2026-10-09T04:04:29.094Z",
    "dateReserved": "2026-05-05T02:50:42.544Z",
    "dateUpdated": "2026-10-09T04:04:29.094Z",
    "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.

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.
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FKIE_CVE-2026-7827

CVE-2026-7827 (GCVE-0-2026-7827)

Tags

Sightings

Nomenclature

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