CVE-2025-54518

high

Description

Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.

References

https://thehackernews.com/2026/05/microsoft-patches-138-vulnerabilities.html

https://docs.cloud.google.com/support/bulletins/index#gcp-2026-032

https://www.tenable.com/blog/microsofts-may-2026-patch-tuesday-addresses-118-cves-cve-2026-41103

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html

https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-54518.json

https://bugzilla.redhat.com/show_bug.cgi?id=2477784

https://access.redhat.com/security/cve/CVE-2025-54518

https://access.redhat.com/errata/RHSA-2026:59091

https://access.redhat.com/errata/RHSA-2026:56573

https://access.redhat.com/errata/RHSA-2026:55444

https://access.redhat.com/errata/RHSA-2026:54769

https://access.redhat.com/errata/RHSA-2026:53990

https://access.redhat.com/errata/RHSA-2026:53989

https://access.redhat.com/errata/RHSA-2026:53329

https://access.redhat.com/errata/RHSA-2026:50979

https://access.redhat.com/errata/RHSA-2026:50978

http://xenbits.xen.org/xsa/advisory-490.html

http://www.openwall.com/lists/oss-security/2026/05/12/15

Details

Source: Mitre, NVD

Published: 2026-05-15

Updated: 2026-08-25

Risk Information

CVSS v2

Base Score: 6.2

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 7.3

Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N