CPU OP Cache Corruption
Summary
AMD has identified a vulnerability in the CPU operation (op/µop) cache on Zen 2‑based products that can cause incorrect instructions to be executed at a higher privilege level.
CVE Details
Refer to Glossary for explanation of terms
| CVE | CVE Description | CVSS Score |
| CVE-2025-54518 | 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. | 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 |
Affected Products and Mitigation
AMD EPYC™ Series Processors
AMD has coordinated with operating system vendors on OS-level mitigations.
| Product | Mitigation | Mitigation Release Date |
| AMD EPYC™ 7002 Series Processors | OS Update | Contact your OS Vendor |
AMD Ryzen™ Series Processors
AMD recommends updating to the Platform Initialization (PI) version indicated below.
Note: Mitigations are planned to be released by AMD to the Original Equipment Manufacturers (OEMs) on the dates listed below. Please contact your OEM for the BIOS update specific to your product(s).
| Product | Mitigation | Mitigation Release Date |
| AMD Ryzen™ 3000 Series Desktop Processors | ComboAM4PI 1.0.0.10 | 10/24/2025 |
| AMD Ryzen™ 3000 Series Desktop Processors | ComboAM4v2 1.2.0.10 | 10/31/2025 |
| AMD Ryzen™ 4000 Series Desktop Processors | ComboAM4v2 1.2.0.10 | 10/31/2025 |
| AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics | RenoirPI-FP6_1.0.0.Ed | 11/11/2025 |
| AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics | ComboAM4v2 1.2.0.10 | 10/31/2025 |
| AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | CezannePI-FP6_1.0.1.1d | 12/02/2025 |
| AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | MendocinoPI-FT6_1.0.0.7f | 10/21/2025 |
| AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics | CezannePI-FP6_1.0.1.1d | 12/02/2025 |
| AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors | ChagallWSPI-sWRX8-1.0.0.D | 11/04/2025 |
| AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors | CastlePeakWSPI-sWRX8 1.0.0.I | 10/17/2025 |
AMD EPYC™ Embedded Series Processors
AMD has coordinated with operating system vendors on OS-level mitigations.
| Product | Mitigation | Mitigation Release Date |
| AMD EPYC™ Embedded 7002 Series Processors | OS Update | Contact your OS Vendor |
AMD EPYC™ Ryzen™ Embedded Series Processors
AMD recommends updating to the Platform Initialization (PI) version indicated below.
Note: Mitigations are planned to be released by AMD to the Original Equipment Manufacturers (OEMs) on the dates listed below. Please contact your OEM for the BIOS update specific to your product(s).
| Product | Mitigation | Mitigation Release Date |
| AMD Ryzen™ Embedded V2000 Series Processors | EmbeddedPI-FP6_1.0.0.D | 2025-12-29 |
Acknowledgement
Internally found: CVE-2025-54518
Revisions
| Revision Date | Description |
| 2026-05-12 | Initial publication |
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