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CVE

CVE-2021-26391

Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker w

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.

HIGH · CVSS 7.8 EPSS 0.00061
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

26
amd enterprise driver< 22.10.20
amd radeon pro software< 22.q2
amd radeon software< 22.5.2
amd radeon rx vega 56 firmwareall versions
amd radeon rx vega 64 firmwareall versions
amd ryzen 3 5300ge firmwareall versions
amd ryzen 3 5300g firmwareall versions
amd ryzen 5 5600ge firmwareall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Nov 2022 · 09:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029Vendor Advisory
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