CVE-2026-64907: Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

PriorityP346high7.8CVSS 3.1

AVLACLPRNUIRSUCHIHAH

EPSS

0.34%

26.8th percentile

Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Affected

9 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_2019	>= 19.0.0 < https://aka.ms/OfficeSecurityReleases	https://aka.ms/OfficeSecurityReleases
microsoft	microsoft_office_365_for_mac	>= 1.0.0 < 16.112.26081010	16.112.26081010
microsoft	microsoft_office_ltsc_2021	>= 16.0.1 < https://aka.ms/OfficeSecurityReleases	https://aka.ms/OfficeSecurityReleases
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 < 16.112.26081010	16.112.26081010
microsoft	microsoft_office_ltsc_for_mac_2024	>= 16.0.0 < 16.112.26081010	16.112.26081010
microsoft	microsoft_word_2016	>= 16.0.1 < 16.0.5565.1000	16.0.5565.1000
microsoft	word	—	—

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