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Vulnerabilities

Vulnerability · CVE-2021-26377

Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a po

Published Sep 6, 2025 · catalog updated Sep 8, 2025 · AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-26377. EPSS is 0.15%. Act only if a listed version of AMD AMD Ryzen™ 7030 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
Medium4.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Advisory link
Affected products
vendor AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics patch: CezannePI-FP6 1.0.0.8

Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

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 Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics patch: CezannePI-FP6 1.0.0.8patch: CezannePI-FP6 1.0.0.8

How to fix CVE-2021-26377

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-2021-26377. EPSS is 0.15%. Act only if a listed version of AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics is installed.

Which versions are affected?

Compare what you have installed with AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics patch: CezannePI-FP6 1.0.0.8 patch: CezannePI-FP6 1.0.0.8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.15%. 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. Sep 6, 2025 · EUVD

    Detected

    Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

  2. Sep 8, 2025 · EUVD

    Updated

    Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

Sources

  • CVE.orgVulnerability recordCVE-2021-26377

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-26377

    30-day exploitation probability 0.15%

    first.org
  • EUVDVulnerability recordEUVD-2021-13183

    Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 22, 2026
  • EUVDOct 22, 2026