CVE-2026-45643

Published: Jun 9, 2026Modified: Jun 11, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: secure@microsoft.com

Description

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Affected (9)

Products: Microsoft: 365 Apps, Microsoft 365, Office 2021, Office 2024

4 products

Configuration A

9 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
Microsoft Microsoft 365	All versions
Microsoft Office 2021	All versions
Microsoft Office 2021	All versions
Microsoft Office 2021	All versions
Microsoft Office 2024	All versions
Microsoft Office 2024	All versions
Microsoft Office 2024	All versions

Related CWEs

Untrusted Pointer Dereference

The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45643

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.