What is CVE-2025-66960?

CVE-2025-66960 is a high-severity vulnerability in Ollama, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-01-21.

How severe is CVE-2025-66960?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Ollama

CVE-2025-66960

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

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.004 (28.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ollama — versions 0.12.10
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation
CWE-400 — Uncontrolled Resource Consumption

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66960?: CVE-2025-66960 is a high-severity vulnerability in Ollama, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-01-21.
How severe is CVE-2025-66960?: High severity. CVSS v3 base score is 7.5 out of 10.