What’s Vulnerable › Vulnerabilities

CVE-2021-26393

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-11-09 · updated 2026-06-17
• Weakness: CWE-401

Description

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE) may allow an authenticated attacker with privileges to generate a valid signed TA and potentially poison the contents of the process memory with attacker controlled data resulting in a loss of confidentiality.

Affected products

• Amd 3015Ce Firmware: all versions
• Amd 3015E Firmware: all versions
• Amd 3020E Firmware: all versions
• AMD Athlon Gold 3150C Firmware: all versions
• AMD Athlon Gold 3150U Firmware: all versions
• AMD Athlon Pro 3045B Firmware: all versions
• AMD Athlon Pro 3145B Firmware: all versions
• AMD Athlon Silver 3050C Firmware: all versions
• AMD Athlon Silver 3050E Firmware: all versions
• AMD Athlon Silver 3050U Firmware: all versions
• AMD Enterprise Driver: before 22.10.20 — fixed in 22.10.20
• AMD Radeon Pro Software: before 22.q2 — fixed in 22.q2
• AMD Radeon Rx Vega 56 Firmware: all versions
• AMD Radeon Rx Vega 64 Firmware: all versions
• AMD Radeon Software: before 22.5.2 — fixed in 22.5.2
• AMD Ryzen 3 2200G Firmware: all versions
• AMD Ryzen 3 2200Ge Firmware: all versions
• AMD Ryzen 3 2200U Firmware: all versions
• AMD Ryzen 3 2300U Firmware: all versions
• AMD Ryzen 3 3200G Firmware: all versions
• AMD Ryzen 3 3250C Firmware: all versions
• AMD Ryzen 3 3250U Firmware: all versions
• AMD Ryzen 3 3300U Firmware: all versions
• AMD Ryzen 3 3350U Firmware: all versions
• AMD Ryzen 3 5300G Firmware: all versions
• AMD Ryzen 3 5300Ge Firmware: all versions
• AMD Ryzen 3 5300U Firmware: all versions
• AMD Ryzen 3 5400U Firmware: all versions
• AMD Ryzen 3 Pro 3200G Firmware: all versions
• AMD Ryzen 3 Pro 3200Ge Firmware: all versions

How to fix

Upgrade to a fixed version: AMD Enterprise Driver 22.10.20; AMD Radeon Pro Software 22.q2; AMD Radeon Software 22.5.2. Check the vendor advisory for mitigations.

References

• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-5001
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-5001

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