RDSEED failure is a security vulnerability affecting AMD Zen 5 processors related to the RDSEED instruction used for seeding hardware RNGs.
Overview
RDSEED failure is a security vulnerability affecting AMD Zen 5 processors related to the RDSEED instruction used for seeding hardware RNGs. The flaw could impact the quality of cryptographic randomness, potentially weakening key generation and encryption processes. AMD has confirmed the vulnerability and is preparing mitigation guidance and firmware/microcode updates.
Related Threat Clusters
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AMD Confirms Cryptographic Security Bug in Zen 5 Processors
AMD has confirmed a security vulnerability in its Zen 5 architecture related to RDSEED functionality. This bug could affect the cryptographic security of systems utilizing these processors. A fix is expected to be…
2 articles · Updated November 3, 2025 -
AMD Confirms Critical Security Vulnerability in Zen 5 Processors
AMD has confirmed a security vulnerability in its Zen 5 architecture related to RDSEED failure, which could compromise cryptographic security in affected systems. The company has announced that fixes will be implemented…
2 articles · Updated November 3, 2025
Recent Intelligence Reports
- AMD confirms security vulnerability on Zen 5 — Tomshardware · November 3, 2025