PT-2025-23026 · Xen+1 · Windows Drivers+1

Tu Dinh · CVE-2025-27464 · Published 2025-05-27 · Updated 2026-07-09

X.com · Ccbalert

CVSS v4.0

9.4

Critical

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Warning: High severity vulnerabilities in @Citrix XenServer VM Tools for Windows (#CVE-2025-27462, #CVE-2025-27463, #CVE-2025-27464) impact Windows VMs on XenServer 8.4 & Citrix Hypervisor 8.2 CU1 LTSR, risking sandbox escapes. Act now! #Patch https://t.co/SF4q8mMyxr

Fix

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

CVE-2025-27464

MGASA-2025-0270

Affected Products

Windows Drivers

Xen

References · 31

• https://nvd.nist.gov/vuln/detail/CVE-2025-27464 · Security Note
• https://osv.dev/vulnerability/MGASA-2025-0270 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2025-0270.html · Security Note
• https://openwall.com/lists/oss-security/2025/07/08/2 · Note
• https://openwall.com/lists/oss-security/2024/08/14/2 · Note
• https://openwall.com/lists/oss-security/2025/09/09/1 · Note
• https://openwall.com/lists/oss-security/2025/10/21/1 · Note
• https://openwall.com/lists/oss-security/2025/05/27/1 · Note
• https://openwall.com/lists/oss-security/2024/07/16/4 · Note
• https://twitter.com/CCBalert/status/1929568464152256853 · Twitter Post
• https://openwall.com/lists/oss-security/2024/12/17/1 · Note
• https://openwall.com/lists/oss-security/2025/05/12/4 · Note
• https://openwall.com/lists/oss-security/2025/02/27/1 · Note
• https://bugs.mageia.org/show_bug.cgi?id=33401 · Note
• https://lists.opensuse.org/archives/list/[e-mail]/message/KEACKX57LEHS2YKZ4PO5DYNOQRGQSDO2 · Note