AUGUST 16, 2026
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Case File

CVE-2026-43631

HIGH · CVSS 8.1 EPSS 0.41% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-06 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The vulnerability affects the vocab pointer in llama-server builds from b7492 to b9060 when the --sleep-idle-seconds feature is enabled. It allows unauthenticated remote attackers to execute arbitrary code by exploiting a use-after-free condition during the server's transition to sleep mode, leading to potential system compromise. Organizations using affected versions of llama.cpp should prioritize patching to mitigate the risk of remote code execution.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-43631
Severity
HIGH
CVSS
8.1
EPSS
0.41%

Original NVD 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.