CVE-2025-49697

Published: Jul 8, 2025Modified: Jul 15, 2025

8.4

Vector

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

Exploitability: 2.5 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Affected (14)

Products: Microsoft: 365 Apps, Office, Office Long Term Servicing Channel, Office Online Server

4 products

Office Long Term Servicing Channel

Office Online Server

Configuration A

14 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
Microsoft Office	All versions
Microsoft Office	Version 2016
Microsoft Office	Version 2016
Microsoft Office	Version 2019
Microsoft Office	Version 2019
Microsoft Office Long Term Servicing Channel	Version 2021
Microsoft Office Long Term Servicing Channel	Version 2021
Microsoft Office Long Term Servicing Channel	Version 2021
Microsoft Office Long Term Servicing Channel	Version 2024
Microsoft Office Long Term Servicing Channel	Version 2024
Microsoft Office Long Term Servicing Channel	Version 2024
Microsoft Office Online Server	Before 16.0.10417.20027

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49697

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.