CVE-2025-29939 Privilege escalation in AMD EPYC™ 7003 Series Processors
A privileged attacker can compromise guest memory confidentiality and integrity in AMD SEV-SNP environments by exploiting improper access controls during initialization.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-29939?
CVE-2025-29939 is a medium-severity vulnerability in AMD EPYC™ 7003 Series Processors, published on 10 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control in secure encrypted virtualization (SEV) could allow a privileged attacker to write to the reverse map page (RMP) during secure nested paging (SNP) initialization, potentially resulting in a loss of guest memory confidentiality and integrity.
Weakness: CWE-284
Which versions are affected by CVE-2025-29939?
How do I fix CVE-2025-29939?
No fix has been published for CVE-2025-29939 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-29939 being exploited?
There is no known exploitation of CVE-2025-29939 in the wild and no public exploit code.
Sources
Also known as GHSA-cfmm-jqwq-9m7g, UBUNTU-CVE-2025-29939.