February 10, 2026 · Applied Cybernetics Group
CVE-2026-21514 Microsoft Office
Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability
- Added to KEV
2026-02-10- Federal due date
2026-03-03- Vendor
- Microsoft
- Product
- Office
- EPSS
- 75.7th percentile (score 0.016, as of
2026-11-06) - NVD CVSS v3.1
- 7.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-21514
CISA short 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.
NVD description
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.