CVE-2025-21357

MEDIUM
2025-01-14 [email protected]
6.7
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 18:03 vuln.today
Patch Released
Mar 28, 2026 - 18:03 nvd
Patch available
CVE Published
Jan 14, 2025 - 18:16 nvd
MEDIUM 6.7

Tags

Microsoft RCE 365 Apps Office Office Long Term Servicing Channel Outlook

Description

Microsoft Outlook Remote Code Execution Vulnerability

Analysis

Microsoft Outlook Remote Code Execution Vulnerability. Rated medium severity (CVSS 6.7). This Use of Uninitialized Resource vulnerability could allow attackers to access uninitialized memory causing crashes or information disclosure.

Technical Context

This vulnerability is classified as Use of Uninitialized Resource (CWE-908), which allows attackers to access uninitialized memory causing crashes or information disclosure. Affected products include: Microsoft 365 Apps, Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft Outlook.

Affected Products

Microsoft 365 Apps, Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft Outlook.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Initialize all variables, use compiler warnings for uninitialized access, use memory-safe languages.

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: +0.3
CVSS: +34
POC: 0

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CVE-2025-21357 vulnerability details – vuln.today
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