CVE-2025-15514
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 50% of all known CVEs.
References
Related Vulnerabilities
Other CWE-395 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-2832 | High | 7.5 | 1.5% | - | - |
| CVE-2024-27659 | Medium | 6.5 | 0.6% | - | - |
| CVE-2024-27658 | Medium | 6.5 | 0.6% | - | - |
| CVE-2025-58142 | Critical | 9.8 | 0.4% | - | Fix |
| CVE-2025-27466 | Critical | 9.8 | 0.4% | - | Fix |
| CVE-2024-27662 | Medium | 6.5 | 0.4% | - | - |
Common questions
How do I fix CVE-2025-15514?
No published fix for CVE-2025-15514 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2025-15514 being actively exploited?
Not that we know of. CVE-2025-15514 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.70% is the estimated probability that it will be exploited in the next 30 days. That is higher than 50% of all scored CVEs.
How severe is CVE-2025-15514?
CVE-2025-15514 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.