CVE-2026-23657

| EUVD-2026-22361 HIGH
2026-04-14 microsoft
Denial Of Service Use After Free Memory Corruption Microsoft Microsoft 365 Apps For Enterprise Microsoft Office Ltsc 2024
7.8
CVSS 3.1
Temporal: 6.8
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CVSS VectorNVD

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

Lifecycle Timeline

1
Analysis Generated
Apr 14, 2026 - 19:25 vuln.today

DescriptionNVD

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

AnalysisAI

Local code execution in Microsoft Office Word via use-after-free memory corruption affects Microsoft 365 Apps for Enterprise and Office LTSC 2024. Unauthenticated attackers can achieve full system compromise (confidentiality, integrity, availability) by inducing users to open specially crafted Word documents, triggering memory reuse vulnerabilities during document parsing. …

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RemediationAI

Within 24 hours: Identify all deployed instances of Microsoft 365 Apps for Enterprise and Office LTSC 2024 in your environment. Within 7 days: Apply the vendor-released patch from Microsoft Security Response Center to all affected versions; validate patch deployment across 100% of endpoints. …

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CVE-2026-23657 vulnerability details – vuln.today
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