Buffer overflow in Ggml-org Llama.cpp
CVE-2026-43629
llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking, allowing attackers with write access t…
Vulnerability class: Integer Overflow
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Ggml-org Llama.cpp — versions b4882, 0.16.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (mitigation)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-43629?
- CVE-2026-43629 is a high-severity vulnerability in Ggml-org Llama.cpp, classified under Integer Overflow or Wraparound. CVSS score: 8.1/10. Published 2026-08-06.
- How severe is CVE-2026-43629?
- High severity. CVSS v3 base score is 8.1 out of 10.