CVE DATABASE / CVE-2026-21514
CVE-2026-21514
Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability
Confirmed exploited in the wild. Added 2026-02-10.
Federal remediation due 2026-03-03.
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.
Summary
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
CVSS 3.1 breakdown
| Base score | 7.8 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21514
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21514
Data: NIST NVD + CISA KEV. NVD last modified 2026-02-11. Always verify against the vendor advisory before acting.