PT-2026-3838 · Ollama · Ollama

Published 2026-01-21 · Updated 2026-02-09 · CVE-2025-66959

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions ollama version 0.12.10

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

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Resource Exhaustion

RCE

Weakness Enumeration

CWE-400

CWE-20

Related Identifiers

CVE-2025-66959

PYSEC-2026-101

Affected Products

Ollama

References · 9

• 🔥 https://zero.shotlearni.ng/blog/cve-2025-66959panic-dos-via-unchecked-length-in-gguf-decoder-copy · Exploit
• https://github.com/ollama/ollama/issues/9820 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66959 · Security Note
• https://osv.dev/vulnerability/CVE-2025-66959 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-101 · Vendor Advisory
• https://t.me/cveNotify/150610 · Telegram Post
• https://reddit.com/r/CVEWatch/comments/1r01b8s/top_10_trending_cves_09022026 · Reddit Post
• https://twitter.com/desckimh/status/2020561454731035057 · Twitter Post
• https://t.me/CVEtracker/42677 · Telegram Post