netVigilance Vulnerability intelligence since 2004
CVE-2026-21514 · netVigilance record NV26-0026

Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision

past due

What to do

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

CISA deadline 2026-03-03 · passed 6 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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

Who is affected

Microsoft Office. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-807.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 6 months ago

Sources