CVE-2026-20949
Microsoft Excel Security Feature Bypass Vulnerability
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
| Vendor | microsoft |
| Product | microsoft 365 apps for enterprise |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jan 13, 2026 |
| Last Updated | Apr 1, 2026 |
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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:U/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 < 16.105.26011018
Microsoft / Microsoft Office LTSC for Mac 2024
16.0.0 < 16.105.26011018