๐Ÿ” CVE Alert

CVE-2026-21514

HIGH 7.8 โš ๏ธ CISA KEV

Microsoft Word Security Feature Bypass Vulnerability

CVSS Score
7.8
EPSS Score
4.2%
EPSS Percentile
89th

Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.

Vendor microsoft
Product microsoft 365 apps for enterprise
Ecosystems
Industries
TechnologyEnterprise
Published Feb 10, 2026
Last Updated Apr 10, 2026
โš ๏ธ Actively Exploited โ€” Act Now

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CVSS v3 Breakdown

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
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

Microsoft / Microsoft 365 Apps for Enterprise
16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC 2021
16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC 2024
16.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC for Mac 2021
16.0.1 < 16.106.26020821
Microsoft / Microsoft Office LTSC for Mac 2024
16.0.0 < 16.106.26020821

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
msrc.microsoft.com: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21514 cisa.gov: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21514