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HIGH CISA KEV Actively Exploited

CVE-2026-21514

Microsoft Word Security Feature Bypass Vulnerability

CVSS v3

7.8

HIGH

EPSS Score

5.4 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

active

SSVC status

Description

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

CISA Known Exploited Vulnerability

Date Added
2026-02-10
Patch Due Date
2026-03-03
Ransomware Use
Unknown

Technical details

CVSS v3 Vector
3.1
Published
2026-02-10
Last Modified
2026-02-11

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.

Is CVE-2026-21514 actively exploited?

Yes. CVE-2026-21514 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 3/3/2026.

What is the CVSS score for CVE-2026-21514?

CVE-2026-21514 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.

Is CVE-2026-21514 affecting your environment?

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