| Component | llama.cpp |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| Published (NVD) | 2026-08-06 |
| Last modified | 2026-09-21 |
| Affected versions | llama.cpp >= b5702, <= b7653 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-125CWE-209 |
| CISA KEV | not listed |
NVD description
llama.cpp builds b5702 through b7653 contain an out-of-bounds read vulnerability in the recurrent memory state restore path that allows attackers with write access to the slot save directory to read memory past the end of the allocated cells array. Attackers can craft a malicious slot file with an oversized seq_id value to trigger an out-of-bounds read that leaks heap data including pointer values into server logs, defeating ASLR protections and facilitating further exploitation.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep llama.cpp off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-43630
- https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
- https://github.com/ggml-org/llama.cpp/commit/f93c09e2673090b59802f2552848a1cac70598b0
- https://www.vulncheck.com/advisories/llama-cpp-b5702-b7653-out-of-bounds-read-information-disclosure
- https://github.com/ggml-org/llama.cpp
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