High severity · published Feb 10, 2026
CVE-2021-26381
Improper system call parameter validation in the Trusted OS may allow a malicious driver to perform mapping or unmapping operations on a large number of pages, potentially…
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
Improper system call parameter validation in the Trusted OS may allow a malicious driver to perform mapping or unmapping operations on a large number of pages, potentially resulting in kernel memory corruption.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ PRO V520 · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ PRO V620 · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ PRO W5000 Series Graphics Products · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ PRO W6000 Series Graphics Products · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ RX 5000 Series Graphics Products · AMD
All versions, or not specified · source: vendor
AR
AMD Radeon™ RX 6000 Series Graphics Products · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 3000 Series Desktop Processors · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 4000 Series Desktop Processors · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 5000 Series Desktop Processors · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
Affected product
AA
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
AMD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26381
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26381
www.amd.com
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4013.html
www.amd.com
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6024.html
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