CVE-2026-102567
CTranslate2 before 4.8.1 Out-of-Bounds Read via Model Deserialization
- State
- Published
- Severity
- 6.9 Medium
- Published
- Sep 29, 2026
- Updated
- Sep 29, 2026
- Reserved
- Sep 29, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
CTranslate2OpenNMT |
|
References
- Pull Request #2068issue-trackingpatch
- Patch Commitpatch
- https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L81-L87technical-description
- CTranslate2 v4.8.1 Release Notesrelease-notes
- https://github.com/OpenNMT/CTranslate2product
- VulnCheck Advisory: CTranslate2 before 4.8.1 Out-of-Bounds Read via Model Deserializationthird-party-advisory
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