CVE-2009-3525

Name: CVE-2009-3525
Creator: NVD / NIST
Published: 2009-10-05T19:30:00.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.24%

Last modified Jun 16, 2026

CVE-2009-3525 is a vulnerability of currently unknown severity. The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.

Metrics

EPSS Probability

1.24%

65.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Xen	Xen	3.0.3
Xen	Xen	3.3.0
Xen	Xen	3.3.1

References

Timeline

Published: Oct 5, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-3525?

How severe is CVE-2009-3525?

Severity scoring for CVE-2009-3525 is pending analysis. The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2009-3525?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3525?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST