CVE-2025-1975: Ollama Server Vulnerable to Denial of Service Attack
Ollama
Ollama server version 0.5.11 contains a vulnerability allowing a denial of service attack through manipulated manifest content. Improper validation during model downloads via the API pull endpoint can cause server crashes.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 7.5
- EPSS
- 0.01 · top 56% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 16 May 2025
- last update
- 16 May 2025
- CVE ids
Timeline · 2
Sources · 2
Advisories and databases
- 2025-05-16CVE-2025-1975: Ollama Server Vulnerable to Denial of Service (DoS) AttackGitHub Advisory Database · github.com/advisories/GHSA-wrh5-cmwx-q2qr
- 2025-05-16CVE-2025-1975: A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by…NVD · nvd.nist.gov/vuln/detail/CVE-2025-1975
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 16 May 2025 · first reported 16 May 2025
- origin
- GitHub Advisory DatabaseVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
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the brief as text
# CVE-2025-1975: Ollama Server Vulnerable to Denial of Service Attack https://gcdradar.vercel.app/incidents/cve-2025-1975-ollama-server-vulnerable-to-denial-of-service · AIR-2025-0283 · closed 2025-05-16 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2025-05-16 - AI role: Attack on AI - Products: Ollama - CVE ids: CVE-2025-1975 - CVSS: 7.5 ## Summary Ollama server version 0.5.11 contains a vulnerability allowing a denial of service attack through manipulated manifest content. Improper validation during model downloads via the API pull endpoint can cause server crashes. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2025-05-16: CVE-2025-1975: A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by… (https://nvd.nist.gov/vuln/detail/CVE-2025-1975) - 2025-05-16: CVE-2025-1975: Ollama Server Vulnerable to Denial of Service (DoS) Attack (https://github.com/advisories/GHSA-wrh5-cmwx-q2qr) ## Sources - 2025-05-16 GitHub Advisory Database: CVE-2025-1975: Ollama Server Vulnerable to Denial of Service (DoS) Attack https://github.com/advisories/GHSA-wrh5-cmwx-q2qr - 2025-05-16 NVD: CVE-2025-1975: A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by… https://nvd.nist.gov/vuln/detail/CVE-2025-1975 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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AI - closed7.5Ollama CVE-2024-8063: Ollama Modelfile Processing Causes Denial of Service
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AI - closed7.5Ollama CVE-2025-0317: Ollama Divide-By-Zero Error Leads to Server Crash
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AI