CVE-2026-102566CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin
Updated under an hour ago ()
Does this affect you?
It affects OpenNMT CTranslate2. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.15%, higher than 4% of scored CVEs.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.15% (percentile 4)
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OpenNMT CTranslate2 opennmt:ctranslate2 (from the name) | before 4.8.1; 4.8.1 not affected | CNA record |
References
- https://github.com/OpenNMT/CTranslate2/pull/2068issue-tracking, patch
- https://github.com/OpenNMT/CTranslate2/commit/d9b991e0700933a0c05373df8b52ed89cdcab96dpatch
- https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L656-L657technical-description
- https://github.com/OpenNMT/CTranslate2/releases/tag/v4.8.1release-notes
- https://github.com/OpenNMT/CTranslate2product
- https://www.vulncheck.com/advisories/ctranslate2-before-4.8.1-heap-buffer-overflow-via-model-binthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.