High 7.5Published Oct 31, 2025

CVE-2025-58149Incorrect removal of permissions on PCI device unplug

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-672
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: XEN
NVD analysis: Analyzed
Record last updated: Nov 4, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Xen Xen xen:xen (from the name)	consult Xen advisory XSA-476 status unknown	CNA record
xen xen xen:xen	from 4.0.0	NVD

References

References

https://xenbits.xenproject.org/xsa/advisory-476.html	patch, vendor-advisory
http://www.openwall.com/lists/oss-security/2025/10/24/1	mailing-list, patch, third-party-advisory
http://xenbits.xen.org/xsa/advisory-476.html	patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.