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Vulnerability record · CVE-2024-39720 · published 31 October 2024

CVE-2024-39720: Ollama out-of-bounds read vulnerability

Ollama · Ollama

An issue was discovered in Ollama before 0.1.46. An attacker can use two HTTP requests to upload a malformed GGUF file containing just 4 bytes starting with the GGUF custom magic header. By leveraging a custom Modelfile that includes a FROM statement pointing to the attacker-controlled blob file, the attacker can crash the application through the CreateModel route, leading to a segmentation fault (signal SIGSEGV: segmentation violation).

8.2 CVSS 3.1 High EPSS 2.5% · top 16.2% CWE-125 · Out-of-bounds read
8.2CVSS 3.1 base score
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Ollama before 0.1.46. An attacker can use two HTTP requests to upload a malformed GGUF file containing just 4 bytes starting with the GGUF custom magic header. By leveraging a custom Modelfile that includes a FROM statement pointing to the attacker-controlled blob file, the attacker can crash the application through the CreateModel route, leading to a segmentation fault (signal SIGSEGV: segmentation violation).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ollama/ollama/compare/v0.1.45...v0.1.46#diff-782c2737eecfa83b7cb46a77c8bdaf40023e7067baccd4f806ac5517 Product
https://oligo.security/blog/more-models-more-probllms ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-63389Ollama missing authentication for critical function vulnerabilityA critical authentication bypass vulnerability exists in Ollama platform's API endpoints in versions prior to and including v0.12.3. The platform exp…EPSS 0.71%8.8CVE-2026-7482Ollama out-of-bounds read vulnerabilityOllama before 0.17.1 contains a heap out-of-bounds read vulnerability in the GGUF model loader. The /api/create endpoint accepts an attacker-supplied…EPSS 0.71%8.8CVE-2024-37032Ollama digest validation path traversal enables remote code executionOllama before 0.1.34 fails to validate the format of the model digest (expected sha256 with 64 hex digits) when resolving the model path, so malforme…EPSS 90%analysed8.7CVE-2025-15514Ollama vulnerabilityOllama 0.11.5-rc0 through current version 0.13.5 contain a null pointer dereference vulnerability in the multi-modal model image processing functiona…EPSS 0.78%7.7CVE-2026-42249Ollama path traversal vulnerabilityOllama for Windows contains a Remote Code Execution vulnerability in its update mechanism due to improper handling of attacker‑controlled HTTP respon…EPSS 0.52%7.7CVE-2026-42248Ollama download of code without integrity check vulnerabilityOllama for Windows does not perform integrity or authenticity verification of downloaded update executables. Unlike other platforms, the Windows impl…EPSS 0.33%7.5CVE-2026-15685Ollama vulnerabilityOllama downloadBlob Improper Validation of Array Index Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial…EPSS 0.72%7.5CVE-2026-5757Ollama out-of-bounds read vulnerabilityUnauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an attacker to read and exfiltrate the serve…EPSS 0.74%

Source: NIST National Vulnerability Database (record CVE-2024-39720), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.