CVE-2026-102566— CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin
Quick assessment
Affected
OpenNMT CTranslate2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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 allocatio
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I. Basic Information for CVE-2026-102566
Vulnerability Information
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Vulnerability Title
CTranslate2 before 4.8.1 Heap Buffer Overflow via model.bin
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenNMT | CTranslate2 | 0 ~ 4.8.1 | - |
|
II. Public POCs for CVE-2026-102566
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-102566 (6)
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https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L656-L657 technical-description
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IV. Related Vulnerabilities
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V. Comments for CVE-2026-102566
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