CVE-2025-15514Ollama 0.11.5-rc0 through current version 0.13.5 contain a null pointer dereference vulnerability in the multi-modal model image processing functionality.
Updated under an hour ago ()
Does this affect you?
It affects ollama. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-395
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ollama ollama ollama:ollama | from 0.11.6 through 0.13.5; 0.11.5; 0.11.5; 0.11.5; 0.11.5; 0.11.5; 0.11.5; 0.11.5 | NVD |
References
- https://https://github.com/ollama/ollamaproduct
- https://huntr.com/bounties/172df98b-07cd-41ea-a628-366f8cd525c0exploit, patch, third-party-advisory
- https://ollama.com/product
- https://www.vulncheck.com/advisories/ollama-multi-modal-image-processing-null-pointer-dereferencethird-party-advisory
- https://access.redhat.com/security/cve/CVE-2025-15514
- https://bugzilla.redhat.com/show_bug.cgi?id=2428828
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-15514.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.