CVE-2026-43630: Ggml Llama.cpp

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Ggml Llama.cpp: from b5702, up to and including b7653

Published 2026-08-06. Last modified 2026-09-21.