MediumVulnerability

CVE-2026-15685: Ollama downloadBlob improper array index validation denial of service

Source: NVD(opens in a new tab)
Identifier: CVE-2026-15685
Published: July 13, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.7%

Summary

CVE-2026-15685 is an improper validation of array index flaw in the downloadBlob function of Ollama. Remote attackers can exploit it without authentication to cause a denial-of-service condition, because user-supplied data is not properly validated, allowing a memory access past the end of an allocated array.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

EPSS: 0.7%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 14, 2026.
Disclosure date: July 13, 2026

Weaknesses and techniques

Weakness (CWE): CWE-129

Classification

Attack type: Denial of service
Attack sophistication: Trivial
AI component targeted: Inference
Impact: Availability
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-15685

First tracked: July 13, 2026 at 08:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Topics

Inference infrastructure

Summary

Mitigation

Topics

Related items