CVE-2025-66959 Affecting ollama package, versions <0.12.11-r0
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-MINIMOSLATEST-OLLAMA-15199548
- published4 Feb 2026
- disclosed21 Jan 2026
Introduced: 21 Jan 2026
CVE-2025-66959 (opens in a new tab)How to fix?
Upgrade Minimos:latest ollama to version 0.12.11-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ollama package and not the ollama package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder
References
- https://www.cve.org/CVERecord?id=CVE-2025-66959
- https://github.com/advisories/GHSA-h73v-mc67-xw25
- https://osv.dev/vulnerability/MINI-vj8p-hx49-g82g
- https://osv.dev/vulnerability/CVE-2025-66959
- https://github.com/ollama/ollama/issues/9820
- https://zero.shotlearni.ng/blog/cve-2025-66959panic-dos-via-unchecked-length-in-gguf-decoder-copy/