CVE-2025-0027

MEDIUMCVSS 5.9/10EPSS 0.17%

Last modified

CVE-2025-0027 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Improper access control in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to bypass Reverse Map Table (RMP) protections, potentially impacting the integrity of Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) guest memory.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

Improper access control in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to bypass Reverse Map Table (RMP) protections, potentially impacting the integrity of Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) guest memory.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
AMDAMD EPYC™ 9004 Series ProcessorsAll versions
AMDAMD EPYC™ 7003 Series ProcessorsAll versions
AMDAMD EPYC™ 9005 Series ProcessorsAll versions
AMDAMD EPYC™ 8004 Series ProcessorsAll versions
AMDAMD EPYC™ Embedded 7003 Series ProcessorsAll versions
AMDAMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")All versions
AMDAMD EPYC™ Embedded 9005 Series ProcessorsAll versions
AMDAMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")All versions
AMDAMD EPYC™ Embedded 8004 Series ProcessorsAll versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2025-0027?
Improper access control in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to bypass Reverse Map Table (RMP) protections, potentially impacting the integrity of Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) guest memory.
How severe is CVE-2025-0027?
CVE-2025-0027 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-0027?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST