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CVE-2025-27463

CRITICAL
9.4
CVSS 4.0
Description
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. These are: 1. XenCons, CVE-2025-27462 2. XenIface, CVE-2025-27463 3. XenBus, CVE-2025-27464

Metadata

CVE ID
CVE-2025-27463
State
PUBLISHED
Assigner
XEN
Reserved
2025-02-26 09:16 UTC
Published
2026-07-09 14:29 UTC
Last updated
2026-07-09 15:52 UTC
Primary CWE
CWE-276
CWE-276 Incorrect default permissions
Vendor / Product
Xen / Windows PV drivers
Sources
cve.org  ·  NVD

Severity & Metrics

9.4 CRITICAL CVSS 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Xen Windows PV drivers Windows all
Weakness (CWE)
CWESourceDescription
CWE-276 cna CWE-276 Incorrect default permissions
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.4 CRITICAL 4.0 cna CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References (1)
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