Description
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
Microsoft Excel Security Feature Bypass Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45459
Scores
CVSS v3
3.3
EPSS
0.0037
EPSS Percentile
29.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-693
Status
published
Products (12)
microsoft/365_apps
(2 CPE variants)
Microsoft/Microsoft 365 Apps for Enterprise
16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office 365 for Mac
-
Microsoft/Microsoft Office 365 for Mac
1.0.0 - 16.110.26061317
Microsoft/Microsoft Office LTSC 2024
16.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC for Mac 2021
-
Microsoft/Microsoft Office LTSC for Mac 2021
16.0.1 - 16.110.26061317
Microsoft/Microsoft Office LTSC for Mac 2024
-
Microsoft/Microsoft Office LTSC for Mac 2024
16.0.0 - 16.110.26061317
microsoft/microsoft_365
... and 2 more
Published
Jun 09, 2026
Tracked Since
Jun 09, 2026