CVE-2025-29939
Improper Access Control in AMD SEV Enables Guest Memory Compromise
Publication date: 2026-02-10
Last updated on: 2026-02-10
Assigner: Advanced Micro Devices Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| amd | secure_encrypted_virtualization | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-284 | The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves improper access control in AMD's secure encrypted virtualization (SEV) technology. Specifically, a privileged attacker could write to the reverse map page (RMP) during the initialization of secure nested paging (SNP). This flaw could compromise the security mechanisms designed to protect guest memory.
How can this vulnerability impact me? :
The impact of this vulnerability is a potential loss of guest memory confidentiality and integrity. This means that an attacker with sufficient privileges could manipulate or access sensitive data within the virtualized environment, undermining the security guarantees of SEV and potentially leading to data breaches or unauthorized data modification.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know