CVE-2021-26398
Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.22% probability · 12th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- amd/epyc 7h12 firmware · amd/epyc 7f72 firmware · amd/epyc 7f52 firmware · amd/epyc 7f32 firmware · amd/epyc 7742 firmware · amd/epyc 7702p firmware · amd/epyc 7702 firmware · amd/epyc 7662 firmware · amd/epyc 7642 firmware · amd/epyc 7552 firmware · amd/epyc 7542 firmware · amd/epyc 7532 firmware · amd/epyc 7502p firmware · amd/epyc 7502 firmware · amd/epyc 7452 firmware · amd/epyc 7402 firmware · amd/epyc 7402p firmware · amd/epyc 7352 firmware · amd/epyc 7302p firmware · amd/epyc 7302 firmware · +40 more
- Source
- psirt@amd.com
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.