CVE-2025-54518

Advisory lineage Upstream: 0 Downstream: 34
Awaiting Analysis
Published: 15 May 2026, 03:06
Last modified:15 Jul 2026, 01:26

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.3 HIGH
v4.0 (cve.org)
EPSS Score
0.26% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 May 2026, 03:06
Published
Vulnerability first disclosed
15 Jul 2026, 01:26
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•HIGH•Score: 7.3CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • v4.0•HIGH•Score: 7.3CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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
  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.26%• Percentile: 17%

Techniques & Countermeasures

  • CWE-1189•Improper Isolation of Shared Resources on System-on-a-Chip (SoC)

    The System-On-a-Chip (SoC) does not properly isolate shared resources between trusted and untrusted agents.

  • CWE-1220•Insufficient Granularity of Access Control

    The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.

References (6)