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Vulnerability record · CVE-2021-26391 · published 9 November 2022

CVE-2021-26391: Amd enterprise driver improper verification of cryptographic signature vulnerability

AAmd · Enterprise Driver

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.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.3% CWE-347 · Improper verification of cryptographic signature
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
26Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

26 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-20586Amd radeon software vulnerabilityA potential vulnerability was reported in Radeon™ Software Crimson ReLive Edition which may allow escalation of privilege. Radeon™ Software Crimson R…EPSS 1.00%7.8CVE-2024-21937Amd radeon software incorrect default permissions vulnerabilityIncorrect default permissions in the AMD HIP SDK installation directory could allow an attacker to achieve privilege escalation potentially resulting…EPSS 0.26%7.8CVE-2023-20598Amd radeon software improper privilege management vulnerabilityAn improper privilege management in the AMD Radeon™ Graphics driver may allow an authenticated attacker to craft an IOCTL request to gain I/O control…EPSS 0.46%7.8CVE-2021-26392Amd enterprise driver out-of-bounds write vulnerabilityInsufficient verification of missing size check in 'LoadModule' may lead to an out-of-bounds write potentially allowing an attacker with privileges t…EPSS 0.27%7.8CVE-2020-12931Amd enterprise driver vulnerabilityImproper parameters handling in the AMD Secure Processor (ASP) kernel may allow a privileged attacker to elevate their privileges potentially leading…EPSS 0.26%7.8CVE-2021-26360Amd enterprise driver improper access control vulnerabilityAn attacker with local access to the system can make unauthorized modifications of the security configuration of the SOC registers. This could allow …EPSS 0.22%7.8CVE-2020-12930Amd enterprise driver vulnerabilityImproper parameters handling in AMD Secure Processor (ASP) drivers may allow a privileged attacker to elevate their privileges potentially leading to…EPSS 0.26%7.8CVE-2021-26317Amd radeon software vulnerabilityFailure to verify the protocol in SMM may allow an attacker to control the protocol and modify SPI flash resulting in a potential arbitrary code exec…EPSS 0.27%

Source: NIST National Vulnerability Database (record CVE-2021-26391), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.