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CVE-2025-61972

HIGHCVSS 8.5/10EPSS 0.13%

Last modified

CVE-2025-61972 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (SMN) access, potentially resulting in arbitrary code execution in AMD Secure Processor (ASP) and loss of the SEV-SNP guest's confidentiality and integrity.. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (SMN) access, potentially resulting in arbitrary code execution in AMD Secure Processor (ASP) and loss of the SEV-SNP guest's confidentiality and integrity.

Metrics

CVSS 4.0
8.5/10

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.13%

2.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

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

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

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2025-61972?
Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network (SMN) access, potentially resulting in arbitrary code execution in AMD Secure Processor (ASP) and loss of the SEV-SNP guest's confidentiality and integrity.
How severe is CVE-2025-61972?
CVE-2025-61972 has a CVSS score of 8.5/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2025-61972?
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.

How Strix Helps

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Source: NVD / NIST