Guest integrity loss via firmware use-after-free
Published Feb 10, 2026 · Updated Feb 10, 2026
Use-after-free in AMD SEV firmware allows local users with hypervisor privileges to compromise migrated SEV-SNP guest integrity. AMD identifies a use-after-free but has not published the freed object, lifetime error, or function that processes guest activation. Exploitation requires a malicious hypervisor, a migrated guest using SINGLE_SOCKET, and activation on a socket other than the migration agent's socket; the reported consequence is integrity loss only.
Summary
What happened
Use-after-free in AMD SEV firmware allows local users with hypervisor privileges to compromise migrated SEV-SNP guest integrity. AMD identifies a use-after-free but has not published the freed object, lifetime error, or function that processes guest activation. Exploitation requires a malicious hypervisor, a migrated guest using SINGLE_SOCKET, and activation on a socket other than the migration agent's socket; the reported consequence is integrity loss only.
The record
- CVE
- CVE-2025-0031
- Published
- Feb 10, 2026
- Updated
- Feb 10, 2026
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD EPYC Embedded 8004 Series Processors
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 10, 2026CVE publishedPublication date reported by the CVE source.
- Feb 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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