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CVE-2026-21514Microsoft Word Security Feature Bypass Vulnerability
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
7.8 HIGHEPSS 1.58%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.8 | HIGH | 3.1microsoft (CNA) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 7.8 | HIGH | 3.1microsoft (CNA) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C |
CISA required action
⚡ Known exploited · remediation due Mar 3, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2026-21514
- Status
- Analyzed
- Assigner (CNA)
- microsoft
- Published
- Feb 10, 2026
- Last modified
- 2026-08-19 16:26 UTC
- Weaknesses
- CWE-807 · Reliance on Untrusted Inputs in a Security Decision
Affected Products
As published by the CNA in the CVE record.
MicrosoftMicrosoft 365 Apps for Enterprise1 version range
- 16.0.1 before https://aka.ms/OfficeSecurityReleases
MicrosoftMicrosoft Office LTSC 20211 version range
- 16.0.1 before https://aka.ms/OfficeSecurityReleases
MicrosoftMicrosoft Office LTSC 20241 version range
- 16.0.0 before https://aka.ms/OfficeSecurityReleases
MicrosoftMicrosoft Office LTSC for Mac 20211 version range
- 16.0.1 before 16.106.26020821
MicrosoftMicrosoft Office LTSC for Mac 20241 version range
- 16.0.0 before 16.106.26020821