CVE Watch—

CVE-2026-21514

Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability

CVSS

—

No CVSS

EPSS

1.6%

p75

KEV

YES

Feb 10, 2026

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

1.5%EPSS · 30 days1.6%

2026-09-172026-10-15

KEV catalog record

Product

Microsoft / Office

Vulnerability

Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability

Added to KEV

Feb 10, 2026

Remediate by

Mar 3, 2026

Known ransomware use

Summary description

Microsoft Office Word contains a reliance on untrusted inputs in a security decision vulnerability that could allow an authorized attacker to elevate privileges locally.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21514 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21514

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