PT-2026-47945 · Microsoft · 365 Apps For Enterprise+10

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-45458

NVD

CVSS v3.1

8.4

High

Base vector

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

Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-45458

Affected Products

365 Apps For Enterprise

Office 2019

Office 365 For Mac

Office Ltsc 2021

Office Ltsc 2024

Office Ltsc For Mac 2021

Office Ltsc For Mac 2024

Sharepoint Enterprise Server 2016

Sharepoint Server 2019

Sharepoint Server Subscription Edition

Word 2016

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-45458 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45458 · Vendor Advisory