AMD EPYC™ 7002 Series Processors: Improper Isolation of Shared Resources on System-on-a-Chip (SoC)
CVE-2025-54518 is a high-severity improper isolation of shared resources on system-on-a-chip (soc) vulnerability in AMD EPYC™ 7002 Series Processors from AMD, with a CVSS 3.1 base score of 7.0 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.29% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of AMD EPYC™ 7002 Series Processors you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
Version data comes from the organisation that assigned the CVE; 9 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 7.3 | High | CNA (amd.com) |
| CVSS 3.1 | 7.0 | High | CNA |
Official 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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: 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.
How developers prevent this class of flaw
- When sharing resources, avoid mixing agents of varying trust levels. Untrusted agents should not share resources with trusted agents.
More Improper Isolation of Shared Resources on System-on-a-Chip (SoC) vulnerabilities (CWE-1189)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
- amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html
- openwall.com/lists/oss-security/2026/05/12/15
- xenbits.xen.org/xsa/advisory-490.html
- access.redhat.com/errata/RHSA-2026:50978
- access.redhat.com/errata/RHSA-2026:50979
- access.redhat.com/errata/RHSA-2026:53329
- access.redhat.com/errata/RHSA-2026:53989
- access.redhat.com/errata/RHSA-2026:53990
- access.redhat.com/errata/RHSA-2026:54769
- access.redhat.com/errata/RHSA-2026:55444
- access.redhat.com/errata/RHSA-2026:56573
- access.redhat.com/errata/RHSA-2026:57402
- access.redhat.com/errata/RHSA-2026:57457
- access.redhat.com/errata/RHSA-2026:57543
- access.redhat.com/errata/RHSA-2026:59091
Other vulnerabilities in AMD EPYC™ 7002 Series Processors
- 8.4 High severity
- 8.5 High severity
- 7.0 High severity
- 7.5 High severity
- 8.3 High severity
- 8.7 High severity
Recent Improper Isolation of Shared Resources on System-on-a-Chip (SoC) vulnerabilities
- 7.2 High severity
- 7.8 High severity
- 7.8 High severity
Spotted an error? Tell us.