Out-of-bounds Write Affecting ggerganov/llama.cpp package, versions [,b8908)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-GGERGANOVLLAMACPP-14912641
- published11 Jan 2026
- disclosed7 Jan 2026
- creditChenhao
Introduced: 7 Jan 2026
CVE-2026-21869 (opens in a new tab)How to fix?
Upgrade ggerganov/llama.cpp to version b8908 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the n_discard parameter in the server's completion endpoints. An attacker can cause memory corruption, process crashes, or potentially execute arbitrary code by supplying a negative value that leads to out-of-bounds memory writes during token evaluation.