VDB-329778 · CVE-2025-58149 · EUVD-2025-37346

Xen PCI Device Unplug permission

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Xen. This impacts an unknown function of the component PCI Device Unplug Handler. The manipulation results in permission. This vulnerability was named CVE-2025-58149. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical has been found in Xen (affected version unknown). Affected is an unknown functionality of the component PCI Device Unplug Handler. The manipulation with an unknown input leads to a permission vulnerability. CWE is classifying the issue as CWE-275. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at xenbits.xen.org. This vulnerability is traded as CVE-2025-58149. The exploitability is told to be easy. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/07/2026). This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 271788 (Fedora 43 : xen (2025-22fd93478b)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (271788), EUVD (EUVD-2025-37346) and CERT Bund (WID-SEC-2025-2409). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

Debian Linux
SUSE Linux
SUSE openSUSE
Open Source Xen

Productinfo

Type

Virtualization Software

Name

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permission
CWE: CWE-275 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 271788
Nessus Name: Fedora 43 : xen (2025-22fd93478b)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/24/2025 Advisory disclosed
10/24/2025 +0 days VulDB entry created
01/07/2026 +75 days VulDB entry last update

Sourcesinfo

Advisory: xenbits.xen.org
Status: Confirmed

CVE: CVE-2025-58149 (🔒)
GCVE (CVE): GCVE-0-2025-58149
GCVE (VulDB): GCVE-100-329778
EUVD: 🔒
CERT Bund: WID-SEC-2025-2409 - Xen: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 10/24/2025 15:30
Updated: 01/07/2026 05:59
Changes: 10/24/2025 15:30 (50), 10/29/2025 01:52 (2), 10/31/2025 13:33 (1), 11/03/2025 16:16 (1), 01/07/2026 05:59 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.