How severe is CVE-2025-54509?

CVE-2025-54509 has a CVSS 4.0 base score of 4.0, rated medium severity.

Is CVE-2025-54509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-54509?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-54509 have an EU (EUVD) identifier?

Yes. CVE-2025-54509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210086.

When was CVE-2025-54509 published?

CVE-2025-54509 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2025-54509

CVE-2025-54509 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.0. 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-1262.

Key facts

Severity: Medium (CVSS 4.0 base score 4.0)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-210086
Weakness: CWE-1262
Published: 2026-06-09
Last modified: 2026-06-17

Description

Improper access control for register interface in the input-output memory management unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD secure processor (ASP) potentially resulting in loss of integrity.

Frequently asked questions

What is CVE-2025-54509?: Improper access control for register interface in the input-output memory management unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD secure processor (ASP) potentially resulting in loss of integrity.
How severe is CVE-2025-54509?: CVE-2025-54509 has a CVSS 4.0 base score of 4.0, rated medium severity.
Is CVE-2025-54509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-54509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-54509 have an EU (EUVD) identifier?: Yes. CVE-2025-54509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210086.
When was CVE-2025-54509 published?: CVE-2025-54509 was published on 2026-06-09 and last updated on 2026-06-17.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3039.html

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