CVE-2026-5757: Unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an at

Q: How do I fix CVE-2026-5757?

ollama: upgrade to newer than 0.13.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-5757 being exploited?

CVE-2026-5757 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5757 affect?

CVE-2026-5757 affects ollama. Severity is high (CVSS 7.5). Unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an attacker to read and exfiltrate the server's heap memory, potentially leading to sensitive data exposure, further compromise, and st

Q: How urgent is CVE-2026-5757?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-5757 is a high-severity flaw (CVSS 7.5) affecting ollama. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an attacker to read and exfiltrate the server's heap memory, potentially leading to sensitive data exposure, further compromise, and stealthy persistence.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-06-26
Last modified	2026-10-25

Publisher (CNA): CERT/CC · Vendor: ollama

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-26 16:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

ollama ollama UPGRADE

Affected: <= 0.13.5

Fixed in: newer than 0.13.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ollama || rpm -q ollama || ollama --version

2. UPGRADE to newer than 0.13.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ollama

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ollama

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5757?

ollama: upgrade to newer than 0.13.5. Exact commands for each OS are on this page.

Is CVE-2026-5757 being exploited?

CVE-2026-5757 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5757 affect?

CVE-2026-5757 affects ollama. Severity is high (CVSS 7.5). Unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an attacker to read and exfiltrate the server's heap memory, potentially leading to sensitive data exposure, further compromise, and st

How urgent is CVE-2026-5757?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

References

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