CVE-2025-21357

Published: Jan 14, 2025Modified: Jun 17, 2026

6.7

Vector

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

Exploitability: 0.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Microsoft Outlook Remote Code Execution Vulnerability

Affected (10)

Products: Microsoft: 365 Apps, Office, Office Long Term Servicing Channel, Outlook

4 products

Office Long Term Servicing Channel

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Microsoft 365 Apps	All versions
Microsoft 365 Apps	All versions
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 2024
Microsoft Office Long Term Servicing Channel	Version 2024
Microsoft Outlook	Version 2016
Microsoft Outlook	Version 2016

Related CWEs

Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21357

Source: secure@microsoft.com

PatchVendor Advisory

Timeline

No history available yet.