# CVE-2025-54518

## Summary

- **CVE ID:** CVE-2025-54518
- **Severity:** HIGH
- **CVSS Score:** 7.3 (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)
- **CWE:** CWE-1189
- **Published:** May 15, 2026
- **Last Modified:** Sep 4, 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.

## Affected Products

- AMD — AMD EPYC™ 7002 Series Processors (os kernel)
- AMD — AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics (RenoirPI-FP6_1.0.0.Ed)
- AMD — AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics (MendocinoPI-FT6_1.0.0.7f)
- AMD — AMD Ryzen™ 3000 Series Desktop Processors (ComboAM4v2 1.2.0.10)
- AMD — AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors (ChagallWSPI-sWRX8-1.0.0.D)
- AMD — AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics (CezannePI-FP6_1.0.1.1d)
- AMD — AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors (CastlePeakWSPI-sWRX8 1.0.0.I)
- AMD — AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics (CezannePI-FP6_1.0.1.1d)
- AMD — AMD Ryzen™ 4000 Series Desktop Processors (ComboAM4v2 1.2.0.10)
- AMD — AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics (ComboAM4v2 1.2.0.10)
- AMD — AMD Ryzen™ 3000 Series Desktop Processors (ComboAM4PI 1.0.0.10)
- AMD — AMD EPYC™ Embedded 7002 Series Processors (OS kernel)
- AMD — AMD Ryzen Embedded V2000A Series Processors (EmbeddedV2KAPI-FP6 1.0.0.A)
- AMD — AMD Ryzen™ Embedded V2000 Series Processors (EmbeddedPI-FP6_1.0.0.D)

## References

- [CNA](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html)
- [CVE](http://www.openwall.com/lists/oss-security/2026/05/12/15)
- [CVE](http://xenbits.xen.org/xsa/advisory-490.html)
- [redhat-SADP](https://access.redhat.com/security/cve/CVE-2025-54518)
- [redhat-SADP](https://bugzilla.redhat.com/show_bug.cgi?id=2477784)
- [redhat-SADP](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-54518.json)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:50978)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:50979)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:53329)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:53990)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:53989)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:55444)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:54769)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:56573)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:59091)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:57543)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:57457)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:57402)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:59831)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:60019)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._