CVE-2026-45460

Published: Jun 9, 2026Modified: Jul 9, 2026

4.7

Vector

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

Exploitability: 1.0 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally.

Affected (12)

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

6 products

Configuration A

12 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
Microsoft 365 Copilot	All versions
Microsoft Microsoft 365	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

Buffer Over-read

The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45460

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.