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Public proof of concept

CVE-2025-66959

A public proof of concept exists; no exploitation attested.

  • Published2026-01-21
  • WeaknessCWE-20 · CWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder

Timeline

dates in UTC
  1. 2026-01-2118:16CVE publishedNVD

Versions per branch

NVD
Ollama
BranchAffectedFixed in
0.12= 0.12.10no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

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

  • ollamaMinimOSall versions · fixed in 0.12.11-r0

Vendor advisories

  • CVE-2025-66959 Red Hat Product Security1 known affected

    ollama: ollama: Denial of Service via GGUF decoder

    rhoai/odh-trustyai-ragas-lls-provider-dsp-rhel9 as a component of Red Hat OpenShift AI (RHOAI)

Full record on NVD

Fix

  1. Workaround from the vendor Red Hat Product Security CVE-2025-66959 · 1 productMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
  2. No fix planned, says the vendor Red Hat Product Security CVE-2025-66959 · 1 productWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

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
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-h73v-mc67-xw25

Frequently asked questions

What is CVE-2025-66959?

An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder

Is CVE-2025-66959 actively exploited?

A proof-of-concept exploit exists for CVE-2025-66959, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-66959?

CVE-2025-66959 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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Sources for this record