VulnerabilityModified

CVE-2023-20596

Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.

CRITICAL 9.8EPSS 1.04%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.04% probability · 62th percentile
CISA KEV: Not listed
Affected: amd/ryzen 7 5700g firmware · amd/ryzen 7 5700ge firmware · amd/ryzen 5 5600g firmware · amd/ryzen 5 5600ge firmware · amd/ryzen 3 5300g firmware · amd/ryzen 3 5300ge firmware · amd/ryzen 9 7950x3d firmware · amd/ryzen 9 7950x firmware · amd/ryzen 9 7900x3d firmware · amd/ryzen 9 7900 firmware · amd/ryzen 9 7900x firmware · amd/ryzen 9 pro 7945 firmware · amd/ryzen 7 7800x3d firmware · amd/ryzen 7 7700x firmware · amd/ryzen 7 7700 firmware · amd/ryzen 7 pro 7745 firmware · amd/ryzen 5 7600x firmware · amd/ryzen 5 7600 firmware · amd/ryzen 5 pro 7645 firmware · amd/ryzen 5 7500f firmware · +40 more
Source: psirt@amd.com

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7011Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7011Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.