AMD confirms security vulnerability on Zen 5-based CPUs that generates potentially predictable keys — RDSEED fix coming through an AGESA firmware update for desktop chips

AMD has confirmed the existence of RDSEED failure on CPUs based on its latest Zen 5 architecture, a critical security vulnerability in its hardware-based random number generator. The company has confirmed the fault could lead to the random number generator putting out keys that aren’t fully unpredictable, opening up a vulnerability to users.

AMD is labeling the fault “AMD-SB-7055” and classifying it as a high-severity issue. Mitigations for the issues are rolling out now through January 2026, depending…