CVE-2026-55042

Medium

Description

Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information locally.

SeverityMedium
CVSS5.5
Exploit probability—
ProductMicrosoft 365
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-908CWE-908

How to fix

Affected products

ProductAffected versionsFixed in
microsoft microsoft_365No range specified—
microsoft 365_appsNo range specified—
microsoft office_2016No range specified—
microsoft office_2019No range specified—
microsoft office_2021No range specified—
microsoft office_2024No range specified—

Check your version

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In the Intelligence 360 plan

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