CVE-2025-0033 — Improper access control within AMD SEV-SNP could allow an admin privileged attac

Improper access control within AMD SEV-SNP could allow an admin privileged attacker to write to the RMP during SNP initialization, potentially resulting in a loss of SEV-SNP guest memory integrity.

01What is this vulnerability?

Improper access control within AMD SEV-SNP could allow an admin privileged attacker to write to the RMP during SNP initialization, potentially resulting in a loss of SEV-SNP guest memory integrity.

02Affected products

Vendor	Product	Versions
AMD	AMD EPYC™ 7003 Series Processors (formerly codenamed "Milan")	MilanPI 1.0.0.H
AMD	AMD EPYC™ 9005 Series Processors (formerly codenamed "Turin")	TurinPI 1.0.0.6

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-10-14T14:49:03.633Z
• Last modified: 2025-10-14T19:10:33.818Z

09References

• www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3020.html