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    4 vulnerabilities found for CTranslate2 by OpenNMT

    CVE-2026-102567 (GCVE-0-2026-102567)

    Vulnerability from nvd – Published: 2026-09-29 14:22 – Updated: 2026-09-29 14:57
    VLAI
    Title
    CTranslate2 before 4.8.1 Out-of-Bounds Read via Model Deserialization
    Summary
    CTranslate2 before 4.8.1 contains an out-of-bounds heap read vulnerability in the binary model loader when deserializing string fields without null terminators. Attackers can craft malicious model files to trigger heap memory reads past buffer boundaries, causing crashes or disclosing adjacent heap memory contents.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-29 14:57 UTC
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6413 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    OpenNMT CTranslate2 Affected: 0 , < 4.8.1 (semver)
    Unaffected: 4.8.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-02 00:00
    Credits
    Chegne Eu Joe
    Show details on NVD website
    To clipboard 

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    CVE-2026-102566 (GCVE-0-2026-102566)

    Vulnerability from nvd – Published: 2026-09-29 14:22 – Updated: 2026-09-29 14:49
    VLAI
    Title
    CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin
    Summary
    CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution.
    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 2026-09-29 14:48 UTC
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6413 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    OpenNMT CTranslate2 Affected: 0 , < 4.8.1 (semver)
    Unaffected: 4.8.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-02 00:00
    Credits
    Chegne Eu Joe
    Show details on NVD website
    To clipboard 

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    CVE-2026-102567 (GCVE-0-2026-102567)

    Vulnerability from cvelistv5 – Published: 2026-09-29 14:22 – Updated: 2026-09-29 14:57
    VLAI
    Title
    CTranslate2 before 4.8.1 Out-of-Bounds Read via Model Deserialization
    Summary
    CTranslate2 before 4.8.1 contains an out-of-bounds heap read vulnerability in the binary model loader when deserializing string fields without null terminators. Attackers can craft malicious model files to trigger heap memory reads past buffer boundaries, causing crashes or disclosing adjacent heap memory contents.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-29 14:57 UTC
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6413 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    OpenNMT CTranslate2 Affected: 0 , < 4.8.1 (semver)
    Unaffected: 4.8.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-02 00:00
    Credits
    Chegne Eu Joe
    Show details on NVD website
    To clipboard 

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    CVE-2026-102566 (GCVE-0-2026-102566)

    Vulnerability from cvelistv5 – Published: 2026-09-29 14:22 – Updated: 2026-09-29 14:49
    VLAI
    Title
    CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin
    Summary
    CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution.
    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 2026-09-29 14:48 UTC
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6413 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    OpenNMT CTranslate2 Affected: 0 , < 4.8.1 (semver)
    Unaffected: 4.8.1 (semver)
    		Create a notification for this product.
    Date Public
    2026-07-02 00:00
    Credits
    Chegne Eu Joe
    Show details on NVD website
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    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-102566",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-29T14:48:31.801016Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-29T14:49:12.947Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "CTranslate2",
          "vendor": "OpenNMT",
          "versions": [
            {
              "lessThan": "4.8.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.8.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Chegne Eu Joe"
        }
      ],
      "datePublic": "2026-07-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "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"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T14:22:36.087Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Pull Request #2068",
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/OpenNMT/CTranslate2/pull/2068"
        },
        {
          "name": "Patch Commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/OpenNMT/CTranslate2/commit/d9b991e0700933a0c05373df8b52ed89cdcab96d"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L656-L657"
        },
        {
          "name": "CTranslate2 v4.8.1 Release Notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/OpenNMT/CTranslate2/releases/tag/v4.8.1"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/OpenNMT/CTranslate2"
        },
        {
          "name": "VulnCheck Advisory: CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/ctranslate2-before-4.8.1-heap-buffer-overflow-via-model-bin"
        }
      ],
      "title": "CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-102566",
    "datePublished": "2026-09-29T14:22:36.087Z",
    "dateReserved": "2026-09-29T13:43:06.440Z",
    "dateUpdated": "2026-09-29T14:49:12.947Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}