How severe is CVE-2025-1975?

CVE-2025-1975 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-1975 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-1975?

CVE-2025-1975 affects Ollama. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-1975?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-1975 have an EU (EUVD) identifier?

Yes. CVE-2025-1975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15424.

When was CVE-2025-1975 published?

CVE-2025-1975 was published on 2025-05-16 and last updated on 2026-06-17.

CVE-2025-1975

CVE-2025-1975 is a high-severity vulnerability in Ollama with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-129.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15424
Weakness: CWE-129
Affected product: Ollama
Published: 2025-05-16
Last modified: 2026-06-17

Description

A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by customizing the manifest content and spoofing a service. This is due to improper validation of array index access when downloading a model via the /api/pull endpoint, which can lead to a server crash.

Frequently asked questions

What is 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 customizing the manifest content and spoofing a service. This is due to improper validation of array index access when downloading a model via the /api/pull endpoint, which can lead to a server crash.
How severe is CVE-2025-1975?: CVE-2025-1975 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-1975 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-1975?: CVE-2025-1975 affects Ollama. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-1975?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-1975 have an EU (EUVD) identifier?: Yes. CVE-2025-1975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15424.
When was CVE-2025-1975 published?: CVE-2025-1975 was published on 2025-05-16 and last updated on 2026-06-17.

References

https://huntr.com/bounties/921ba5d4-f1d0-4c66-9764-4f72dffe7acd

Affected products (1)

cpe:2.3:a:ollama:ollama:0.5.11:*:*:*:*:*:*:*

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