Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability
Microsoft — Office
- Added to KEV catalog
- 10 February 2026
- Federal remediation due date
- 3 March 2026
- Weakness classification (CWE)
- CWE-807
CISA 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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