CVE-2025-1975
published 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 customizing the manifest content and…
PriorityP338high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
0.43%
34.1th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | ollama_ollama | 0 – 0.5.11 | — |
| msrc | azl3_bind_9.19.21-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_bind_9.20.0-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_bind_9.16.50-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_dhcp_4.4.3.p1-2_on_cbl_mariner_2.0 | — | — |
| ollama | ollama | — | — |
| ollama | ollama_ollama | unspecified – latest | — |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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OSV
Ollama Server Vulnerable to Denial of Service (DoS) Attack in github.com/ollama/ollama
osv·2025-05-22
CVE-2025-1975 Ollama Server Vulnerable to Denial of Service (DoS) Attack in github.com/ollama/ollama
Ollama Server Vulnerable to Denial of Service (DoS) Attack in github.com/ollama/ollama
Ollama Server Vulnerable to Denial of Service (DoS) Attack in github.com/ollama/ollama
GHSA
Ollama Server Vulnerable to Denial of Service (DoS) Attack
ghsa·2025-05-16
CVE-2025-1975 [HIGH] CWE-129 Ollama Server Vulnerable to Denial of Service (DoS) Attack
Ollama Server Vulnerable to Denial of Service (DoS) Attack
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.
OSV
Ollama Server Vulnerable to Denial of Service (DoS) Attack
osv·2025-05-16
CVE-2025-1975 [HIGH] Ollama Server Vulnerable to Denial of Service (DoS) Attack
Ollama Server Vulnerable to Denial of Service (DoS) Attack
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.
Red Hat
ollama: Improper Validation of Array Index in ollama/ollama
vendor_redhat·2025-05-16·CVSS 7.5
CVE-2025-1975 [HIGH] CWE-129 ollama: Improper Validation of Array Index in ollama/ollama
ollama: Improper Validation of Array Index in ollama/ollama
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.
A flaw was discovered in Ollama. This flaw allows a malicious to cause a denial of service (DoS) attack in affected versions 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.
Statement: Ansible LightSpeed does not use Ollama and is not installed in this image,
Microsoft
SIG(0) can be used to exhaust CPU resources
vendor_msrc·2024-07-09·CVSS 7.5
CVE-2024-1975 [HIGH] CWE-770 SIG(0) can be used to exhaust CPU resources
SIG(0) can be used to exhaust CPU resources
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
isc: isc
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/e
No public exploits indexed.
2025-05-16
Published