CVE-2025-54518

Severity CVSS v4.0:

HIGH

Type:

Unavailable / Other

Publication date:

15/05/2026

Last modified:

15/05/2026

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.

Impact

Vector 4.0

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 CVSS v4.0 Severity and Metrics:

Base Score: 7.30 HIGH
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

Attack Vector (AV): Local
Attack Complexity (AC): High
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

7.30

Severity 4.0

HIGH

References to Advisories, Solutions, and Tools

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html
http://www.openwall.com/lists/oss-security/2026/05/12/15
http://xenbits.xen.org/xsa/advisory-490.html