PT-2026-32723 · Microsoft · 365 Apps For Enterprise+1

Haifei Li · Published 2026-04-14 · Updated 2026-04-15 · CVE-2026-23657

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft 365 Apps for Enterprise versions 16.0.1 through 16.0.1

Description A use-after-free issue in Microsoft Office Word allows an unauthorized attacker to achieve local remote code execution. This occurs by tricking a user into opening a malicious document that triggers memory corruption during processing. Use-after-free is a condition where a program continues to use a pointer after it has been freed, which can lead to crashes or arbitrary code execution.

Recommendations Update Microsoft 365 Apps for Enterprise to a version newer than 16.0.1.

Fix

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-05371

CVE-2026-23657

Affected Products

365 Apps For Enterprise

Office Word

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23657 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05371 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23657 · Security Note
• https://twitter.com/RedHornet_Intel/status/2044118137075802236 · Twitter Post
• https://twitter.com/HaifeiLi/status/2044113859007643995 · Twitter Post
• https://twitter.com/infoflowcloud/status/2044360462729347508 · Twitter Post
• https://twitter.com/CVEnew/status/2044358627763384357 · Twitter Post