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.

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Fri, 21 Aug 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Ggml-org
Ggml-org llama.cpp
Vendors & Products Ggml-org
Ggml-org llama.cpp

Fri, 21 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title llama.cpp Use-After-Free in RPC GRAPH_RECOMPUTE Handler
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-21T16:28:26.774Z

Reserved: 2026-04-07T20:57:06.209Z

Link: CVE-2026-39909

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-21T17:16:30.810

Modified: 2026-08-21T17:16:30.810

Link: CVE-2026-39909

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T17:30:03Z

Weaknesses