CVE-2026-45459: Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.

PriorityP413low3.3CVSS 3.1

AVLACLPRNUIRSUCLINAN

EPSS

0.37%

29.5th percentile

Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
microsoft	microsoft_365_apps_for_enterprise	>= 16.0.1 < https://aka.ms/OfficeSecurityReleases	https://aka.ms/OfficeSecurityReleases
microsoft	microsoft_office_365_for_mac	>= 1.0.0 < 16.110.26061317	16.110.26061317
microsoft	microsoft_office_ltsc_2024	>= 16.0.0 < https://aka.ms/OfficeSecurityReleases	https://aka.ms/OfficeSecurityReleases
microsoft	microsoft_office_ltsc_for_mac_2021	>= 16.0.1 < 16.110.26061317	16.110.26061317
microsoft	microsoft_office_ltsc_for_mac_2024	>= 16.0.0 < 16.110.26061317	16.110.26061317

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