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Office Long Term Servicing Channel EUVDEUVD-2025-20559

| CVE-2025-49699 HIGH
Use After Free (CWE-416)
2025-07-08 secure@microsoft.com
Microsoft Use After Free Memory Corruption Denial Of Service Office Long Term Servicing Channel Powerpoint Word 365 Apps Office Outlook
7.0
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.0 HIGH
AV:L/AC:H/PR:N/UI:R/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:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Analysis Updated
Apr 16, 2026 - 06:30 EUVD-patch-fix
executive_summary
Re-analysis Queued
Apr 16, 2026 - 05:29 backfill_euvd_patch
patch_released
Patch available
Apr 16, 2026 - 05:29 EUVD
16.0.5508.1002,16.99.25071321,16.0.5508.1000
EUVD ID Assigned
Mar 16, 2026 - 04:21 euvd
EUVD-2025-20559
Analysis Generated
Mar 16, 2026 - 04:21 vuln.today
CVE Published
Jul 08, 2025 - 17:15 nvd
HIGH 7.0

DescriptionCVE.org

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

Analysis

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

Technical ContextAI

A use-after-free vulnerability occurs when a program continues to use a pointer after the referenced memory has been freed, leading to undefined behavior. This vulnerability is classified as Use After Free (CWE-416).

RemediationAI

Use memory-safe languages. Implement proper object lifecycle management. Use static and dynamic analysis tools to detect UAF patterns.

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Same technique Use After Free

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EUVD-2025-20559 vulnerability details – vuln.today
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