CVE-2025-63389: Ollama

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A critical authentication bypass vulnerability exists in Ollama platform's API endpoints in versions prior to and including v0.12.3. The platform exposes multiple API endpoints without requiring authentication, enabling remote attackers to perform unauthorized model management operations.

Affected products

• Ollama Ollama: up to and including 0.12.3

Published 2025-12-18. Last modified 2026-06-17.