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Vulnerabilities

Vulnerability · 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 resultin

Published Feb 10, 2026 · catalog updated Feb 26, 2026 · AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-26381. EPSS is 0.16%. Act only if a listed version of AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Advisory link
Affected products
vendor AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics patch: PicassoPI-FP5 1.0.0.E

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics patch: PicassoPI-FP5 1.0.0.Epatch: PicassoPI-FP5 1.0.0.E

How to fix CVE-2021-26381

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-26381. EPSS is 0.16%. Act only if a listed version of AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics is installed.

Which versions are affected?

Compare what you have installed with AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics patch: PicassoPI-FP5 1.0.0.E patch: PicassoPI-FP5 1.0.0.E. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 10, 2026 · EUVD

    Detected

    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.

  2. Feb 26, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2021-26381

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-26381

    30-day exploitation probability 0.16%

    first.org
  • EUVDVulnerability recordEUVD-2021-13187

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026