CVE-2026-45645

Published: Jun 9, 2026Modified: Jul 9, 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 (Secondary)

Description

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

Affected (13)

Products: Microsoft: 365 Apps, Microsoft 365, Office 2016, Office 2019, Office 2021, Office 2024

6 products

Configuration A

13 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
Microsoft Microsoft 365	All versions
Microsoft Office 2016	All versions
Microsoft Office 2016	All versions
Microsoft Office 2019	All versions
Microsoft Office 2019	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

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

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-2026-45645

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.