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CVE-2025-15514

7.5 · HIGH

Ollama 0.11.5-rc0 through current version 0.13.5 contain a null pointer dereference vulnerability in the multi-modal model image processing functionality.

Published Jan 12, 2026CWE-395EPSS 0.77%

Overview

CVE-2025-15514 is a high-severity vulnerability. It was published on January 12, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Ollama 0.11.5-rc0 through current version 0.13.5 contain a null pointer dereference vulnerability in the multi-modal model image processing functionality. When processing base64-encoded image data via the /api/chat endpoint, the application fails to validate that the decoded data represents valid media before passing it to the mtmd_helper_bitmap_init_from_buf function. This function can return NULL for malformed input, but the code does not check this return value before dereferencing the pointer in subsequent operations. A remote attacker can exploit this by sending specially crafted base64 image data that decodes to invalid media, causing a segmentation fault and crashing the runner process. This results in a denial of service condition where the model becomes unavailable to all users until the service is restarted.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refhttps://github.com/ollama/ollamaRefhuntr.com/bounties/172df98b-07cd-41ea-a628-366f8cd525c0Refollama.com/Refwww.vulncheck.com/advisories/ollama-multi-modal-image-processing-null-pointer-dereferenceRefaccess.redhat.com/security/cve/CVE-2025-15514Refbugzilla.redhat.com/show_bug.cgi?id=2428828Refsecurity.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-15514.json

How CyberStrike helps

Frequently asked questions

What is CVE-2025-15514?

CVE-2025-15514 is a high-severity vulnerability. It was published on January 12, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-15514?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-15514?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-15514?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-15514 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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