CVE-2025-62626 Weak cryptography in AMD EPYC™ 9005 Series Processors
A local attacker can influence RDSEED instruction output on AMD CPUs, leading to weak random number generation and potential security bypasses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62626?
CVE-2025-62626 is a high-severity vulnerability in AMD EPYC™ 9005 Series Processors, published on 21 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of insufficiently random values.
Weakness: CWE-333
Which versions are affected by CVE-2025-62626?
How do I fix CVE-2025-62626?
Apply the vendor's patch.
Is CVE-2025-62626 being exploited?
There is no known exploitation of CVE-2025-62626 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-62626, DEBIAN-CVE-2025-62626, GHSA-gcfh-89mc-2426, ROOT-OS-UBUNTU-2204-CVE-2025-62626, ROOT-OS-UBUNTU-2404-CVE-2025-62626, UBUNTU-CVE-2025-62626.