🛡️ CVE-2025-27466
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-395 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference TSC area. This is CVE-2025-27466. 2. A NULL pointer dereference by assuming the SIM page is mapped when a synthetic timer message has to be delivered. This is CVE-2025-58142. 3. A race in the mapping of the reference TSC page, where a guest can get Xen to free a page while still present in the guest physical to machine (p2m) page tables. This is CVE-2025-58143.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-395
Public Exploit ✅ No
Source NVD
Published 2025-09-11
Updated 2026-06-02
Modified 2025-11-04
Fix URL N/A

Affected Packages

Software From version Fixed in
xen 4.13.0 4.17.0

Exploit Protection

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