CVE-2026-32197

| EUVD-2026-22579 HIGH
2026-04-14 microsoft GHSA-3rjw-x5rf-9pp3
Denial Of Service Use After Free Memory Corruption Microsoft Microsoft 365 Apps For Enterprise Microsoft Excel 2016 Microsoft Office 2019 Microsoft Office Ltsc 2021 Microsoft Office Ltsc 2024 Microsoft Office Ltsc For Mac 2021 Microsoft Office Ltsc For Mac 2024 Office Online Server
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 - 19:34 vuln.today

DescriptionNVD

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

AnalysisAI

Use-after-free memory corruption in Microsoft Excel across Office 2016-2024 and Microsoft 365 enables local code execution when a user opens a malicious spreadsheet. Attackers must craft a weaponized Excel file and trick users into opening it, after which arbitrary code runs with the victim's privileges. …

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RemediationAI

Within 24 hours: Identify all Excel installations across the organization (Office 2016, 2019, 2021, 2024, Microsoft 365, and LTSC editions). Within 7 days: Deploy vendor-released patches to all affected versions and validate installation completion. …

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CVE-2026-32197 vulnerability details – vuln.today
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