HIGH

CVE-2025-66960

CVSS v3

7.5

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

ollamaPyPIall versions · no fixed version listed

Vendor advisories

CVE-2025-66960 Red Hat Product Security1 known affected
ollama: ollama: Denial of Service via untrusted GGUF metadata string length
rhoai/odh-trustyai-ragas-lls-provider-dsp-rhel9 as a component of Red Hat OpenShift AI (RHOAI)

Full record on 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

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-01-21
Last Modified: 2026-02-02

Frequently asked questions

What is 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

Is CVE-2025-66960 actively exploited?

Active exploitation of CVE-2025-66960 has not been confirmed. Its EPSS score was 0.4% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-66960?

CVE-2025-66960 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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