AMD Releases Fixes for High Severity Vulnerabilities in Zen CPUs

The company has issued BIOS updates to mitigate security flaws across all Zen generations, though some chips remain unprotected due to vendor delays.

AMD has disclosed new BIOS-side vulnerabilities across all Zen CPU generations, impacting security through the SPI connection.
The vulnerabilities, listed as high severity, could lead to denial of service, execution of arbitrary codes, and system integrity bypass.
AMD has released BIOS mitigations for all Ryzen CPU lineups, including EPYC, Threadripper, and Embedded series, through updated AGESA versions.
Not all motherboard vendors have released updates with the patched AGESA, leaving some chips vulnerable.
For Zen 2-based chips, the new AGESA versions also address Zenbleed, a previously disclosed vulnerability.