CVE-2025-54518
CVE-2025-54518 is a high-severity vulnerability with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1189.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- CVSS v4: 7.3
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-209882
- Weakness: CWE-1189
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-54518?
- CVE-2025-54518 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-54518 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-54518?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-54518 have an EU (EUVD) identifier?
- Yes. CVE-2025-54518 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209882.
- When was CVE-2025-54518 published?
- CVE-2025-54518 was published on 2026-05-15 and last updated on 2026-06-30.
References
- 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
- https://access.redhat.com/security/cve/CVE-2025-54518
- https://bugzilla.redhat.com/show_bug.cgi?id=2477784
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-54518.json
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