Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially…

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.

Scores

EPSS (exploitation in 30 days)

1.0% · top 36% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Affected products

• AMD · Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics Formerly codenamed “Cezanne” AM4

  • affected various

• AMD · Ryzen™ 7000 Series Desktop Processors with Radeon™ Graphics Formerly codenamed “Raphael”

  • affected various

• AMD · Ryzen™ 7000 Series Desktop Processors with Radeon™ Graphics Formerly codenamed “Raphael” X3D

  • affected various

• AMD · Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Cezanne”

  • affected various

• AMD · AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics "Rembrandt"

  • affected various

• AMD · AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics “Rembrandt-R”

  • affected various

• AMD · Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics Formerly codenamed “Phoenix”

  • affected various

References (1)

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7011 (opens in a new tab)vendor-advisoryx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-20596](https://trackcve.app/badge/CVE-2023-20596.svg)](https://trackcve.app/cve/CVE-2023-20596)

Record last updated 2 Aug 2024, 09:05 UTC.