# CVE-2025-66960: PYSEC-2026-102 - An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the…

Source: https://junglewise.ai/threats/cve-2025-66960-pysec-2026-102-an-issue-in-ollama-v-0-12-10-allows-a-remote  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-01-21  
License: CC BY 4.0 with a link back

CVE-2025-66960 · Severity: low · CVSS 3.1 · Published 2026-01-21

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

Technologies: [ollama (PyPI)](https://junglewise.ai/threats/technologies/pypi-ollama). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2025-66960 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66960 being exploited in the wild.

**How severe is CVE-2025-66960?** Low severity, with a CVSS score of 3.1, published 21 January 2026.

**Which products and versions are affected?** ollama (PyPI) ECOSYSTEM:introduced=0,last_affected=0.12.10-NA.

**Is there a fix for CVE-2025-66960?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-66960?** Check whether you run ollama (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- ollama (PyPI) ECOSYSTEM:introduced=0,last_affected=0.12.10-NA

## Identifiers

- CVE-2025-66960
- PYSEC-2026-102

## Related threats

- [Ollama downloadBlob improper validation of array index denial of service](https://junglewise.ai/threats/cve-2026-15685-ollama-downloadblob-improper-validation-of-array-index-denial-of)
- [PYSEC-2026-101 - An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder](https://junglewise.ai/threats/cve-2025-66959-pysec-2026-101-an-issue-in-ollama-v-0-12-10-allows-a-remote)
- [GO-2025-3851 - Ollama allows deletion of arbitrary files in github.com/ollama/ollama](https://junglewise.ai/threats/cve-2025-44779-pysec-2025-146-an-issue-in-ollama-v0-1-33-allows-attackers-to)
- [Ollama Cross-Domain Token Exposure in model pull mechanism](https://junglewise.ai/threats/cve-2025-51471-ollama-cross-domain-token-exposure-in-model-pull-mechanism)
- [Ollama Server DoS via improper array index validation in /api/pull](https://junglewise.ai/threats/cve-2025-1975-ollama-server-dos-via-improper-array-index-validation-in-api-pull)