What is CVE-2025-58149?

CVE-2025-58149 is a high-severity vulnerability in Xen, classified under Operation on a Resource after Expiration or Release. CVSS score: 7.5/10. Published 2025-10-31.

How severe is CVE-2025-58149?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Xen

CVE-2025-58149

When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assi…

EPSS: 0.004 (32.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Xen — versions consult Xen advisory XSA-476

Weakness classification (CWE)

CWE-672 — Operation on a Resource after Expiration or Release

References

security@xen.org (Patch, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Patch, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-58149?: CVE-2025-58149 is a high-severity vulnerability in Xen, classified under Operation on a Resource after Expiration or Release. CVSS score: 7.5/10. Published 2025-10-31.
How severe is CVE-2025-58149?: High severity. CVSS v3 base score is 7.5 out of 10.