CVE-2026-0480

MEDIUMCVSS 6/10

Last modified

CVE-2026-0480 is a medium-severity vulnerability rated 6/10 on the CVSS scale. Missing Authentication for Critical Function in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to forge SEV-TIO guest request messages potentially compromising SEV-SNP guest memory integrity and confidentiality..

Description

Missing Authentication for Critical Function in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to forge SEV-TIO guest request messages potentially compromising SEV-SNP guest memory integrity and confidentiality.

Metrics

Weakness Enumeration

Affected Software

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

VendorProductVersions
AMDAMD EPYC™ 9005 Series ProcessorsAll versions
AMDAMD EPYC™ 8005 Series ProcessorsAll versions
AMDAMD EPYC™ Embedded 9005 Series ProcessorsAll versions

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-0480?
Missing Authentication for Critical Function in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to forge SEV-TIO guest request messages potentially compromising SEV-SNP guest memory integrity and confidentiality.
How severe is CVE-2026-0480?
CVE-2026-0480 has a CVSS score of 6/10 (MEDIUM severity).
How do I fix CVE-2026-0480?
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