VulnerabilityModified
CVE-2021-26316
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.
HIGH 7.8EPSS 0.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) 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
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- 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
References
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031Vendor Advisory
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032Vendor Advisory
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031Vendor Advisory
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.