Vulnerability · CVE-2021-26380
A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range resulting in loss of integrity.
Published May 15, 2026 · catalog updated Jun 17, 2026 · A compromised Trusted OS
Check if you run it
No confirmed exploitation is on record for CVE-2021-26380. EPSS is 0.10%. Act only if a listed version of A compromised Trusted OS is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (A compromised Trusted OS).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Low1.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.10%
- Remediation
- Advisory link
- Affected products
- See sources for product scope
A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range resulting in loss of integrity.
No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.
How to fix CVE-2021-26380
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
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-2021-26380. EPSS is 0.10%. Act only if a listed version of A compromised Trusted OS is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-190: Integer Overflow. EPSS 0.10%. 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.
May 15, 2026 · NIST NVD
Detected
A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range resulting in loss of integrity.
Jun 17, 2026 · NIST NVD
Updated
A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range resulting in loss of integrity.
Sources
- CVE.orgVulnerability recordCVE-2021-26380
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-26380
30-day exploitation probability 0.1%
first.org - NIST NVDVulnerability recordCVE-2021-26380
A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range resulting in loss of integrity.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.