| Component | Ollama |
| Severity | high (CVSS 7.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Published (NVD) | 2026-01-21 |
| Last modified | 2026-06-17 |
| Affected versions | ollama = 0.12.10 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-20CWE-400 |
| CISA KEV | not listed |
NVD description
An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the fs/ggml/gguf.go, function readGGUFV1String reads a string length from untrusted GGUF metadata
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep Ollama off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2025-66960
- https://github.com/ollama/ollama/issues/9820
- https://zero.shotlearni.ng/blog/cve-2025-66960guf-v1-string-length-cause-panic-in-readggufv1string/
Read more
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