How severe is CVE-2025-52534?

CVE-2025-52534 has a CVSS 4.0 base score of 5.3, rated medium severity.

Is CVE-2025-52534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-52534?

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

Does CVE-2025-52534 have an EU (EUVD) identifier?

Yes. CVE-2025-52534 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207435.

When was CVE-2025-52534 published?

CVE-2025-52534 was published on 2026-02-10 and last updated on 2026-06-17.

CVE-2025-52534

CVE-2025-52534 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.3. 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-1284.

Key facts

Severity: Medium (CVSS 4.0 base score 5.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207435
Weakness: CWE-1284
Published: 2026-02-10
Last modified: 2026-06-17

Description

Improper bound check within AMD CPU microcode can allow a malicious guest to write to host memory, potentially resulting in loss of integrity.

Frequently asked questions

What is CVE-2025-52534?: Improper bound check within AMD CPU microcode can allow a malicious guest to write to host memory, potentially resulting in loss of integrity.
How severe is CVE-2025-52534?: CVE-2025-52534 has a CVSS 4.0 base score of 5.3, rated medium severity.
Is CVE-2025-52534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-52534?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52534 have an EU (EUVD) identifier?: Yes. CVE-2025-52534 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207435.
When was CVE-2025-52534 published?: CVE-2025-52534 was published on 2026-02-10 and last updated on 2026-06-17.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html

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