CVE-2026-39909

Affects: llama.cpp

CVSS: HIGH · 8.1v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-08-21
Weakness: CWE-416
Source: nvd.nist.gov/vuln/detail/CVE-2026-39909

Description

llama.cpp before b8585 contains a use-after-free vulnerability in the RPC server’s GRAPH_RECOMPUTE handler that allows unauthenticated remote attackers to achieve arbitrary read and write access by storing a computation graph, freeing referenced buffers, and reclaiming freed memory with attacker-controlled content. Attackers can send RPC requests to trigger re-execution of stored graphs with dangling pointers, enabling full remote code execution without requiring authentication or user interaction.

References

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