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CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-102566

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-102566

CTranslate2

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "OpenNMT",
    "product": "CTranslate2",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "4.8.1",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.8.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-102566

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#3476 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement