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365 Apps CVE-2025-53784

HIGH
Use After Free (CWE-416)
2025-08-12 secure@microsoft.com
Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps Office Long Term Servicing Channel
8.4
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.4 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 19:06 vuln.today
CVE Published
Aug 12, 2025 - 18:15 nvd
HIGH 8.4

DescriptionCVE.org

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

AnalysisAI

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Affected products include: Microsoft 365 Apps, Microsoft Office Long Term Servicing Channel.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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CVE-2025-53784 vulnerability details – vuln.today
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