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TI-2026-65426 Aliases CVE-2026-102566GHSA-7xqx-34h9-2w97

CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin

Priority LOW 38CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00148 4th percentileScored 2026-11-07
Fix Fixed CTranslate2 (OpenNMT): 4.8.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenNMTCTranslate2before 4.8.14.8.1Patch availableCNA
  • CTranslate2 VendorOpenNMT Affected before 4.8.1 Fixed in 4.8.1 Patch available CNA

Remediation

  • Fix · CNA CTranslate2 (OpenNMT) Fixed in 4.8.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenNMT CTranslate2 4.8.1

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-65427 CTranslate2 before 4.8.1 Out-of-Bounds Read via Model DeserializationPriority LOW 29
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-102566
  2. 2026-10-03 Alias added: GHSA-7xqx-34h9-2w97

References

Patch 2

Other 3

  • TI-2026-65427 CTranslate2 before 4.8.1 Out-of-Bounds Read via Model Deserialization CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences