HIGH

CVE-2026-43631

Ggml Llama.cpp 2026-08-06 CVSS v3.1

CVSS

8.1

Description

llama.cpp builds b7492 through the latest b9060 contains a use-after-free vulnerability in the vocab pointer of llama-server when the --sleep-idle-seconds feature is enabled, allowing unauthenticated remote attackers to execute arbitrary code. Attackers can trigger the vulnerability by sending requests to affected endpoints while the server transitions to sleep mode, causing concurrent worker threads to dereference a freed vocab pointer that can be reclaimed with attacker-controlled data to achieve remote code execution.

Weakness (CWE)

CWE-362 Race Condition

CWE-416 Use After Free

EPSS Score

0.42%

Probability of exploitation in next 30 days

35.9th percentile

References

https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches Patch, Third Party Advisory https://www.vulncheck.com/advisories/llama-cpp-b7492-b9060-use-after-free-rce-via-llama-server Patch, Third Party Advisory

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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