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CVE-2026-21514

nvd nist
Published: Feb 10, 2026Modified: Jun 17, 2026CISA KEV

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

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

Affected (8)

Microsoft
2 products
365 Apps
Office Long Term Servicing Channel
Configuration A
8 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
365 Apps
All versions
365 Apps
All versions
Microsoft
Office Long Term Servicing Channel
Version 2021
Office Long Term Servicing Channel
Version 2021
Office Long Term Servicing Channel
Version 2021
Office Long Term Servicing Channel
Version 2024
Office Long Term Servicing Channel
Version 2024
Office Long Term Servicing Channel
Version 2024

Related CWEs

CWE-807
Reliance on Untrusted Inputs in a Security Decision
The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.

References (2)

Source: secure@microsoft.com
Vendor Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

Timeline

No history available yet.