Strix
26.1K

CVE-2026-21514

HIGHCVSS 7.8/10Actively ExploitedEPSS 1.52%

Last modified

CVE-2026-21514 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.. CISA has confirmed active exploitation in the wild. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
Microsoft365 AppsAll versions
MicrosoftOffice Long Term Servicing Channel2021
MicrosoftOffice Long Term Servicing Channel2024

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-21514?
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
How severe is CVE-2026-21514?
CVE-2026-21514 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2026-21514?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21514?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST