THREATPORT/VULNERABILITY/CVE-2025-66959
HIGH SEVERITY

CVE-2025-66959

Ollama vulnerability

CVSS
7.5
EPSS
4.5%
EPSS pct
91th
Exploited
No known
An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder
Affected vendor
Ollama
Affected product
Ollama
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
  • CWE-400 — Uncontrolled Resource Consumption
Published
2026-01-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 4.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2025-66959

  • Confirm whether Ollama Ollama is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2025-66959.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2025-66959

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2025-66959 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2025-66959?

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