CVE-2026-63528

Medium

Description

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

SeverityMedium
CVSS5.5
Exploit probability—
ProductMicrosoft 365
PublishedAug 11, 2026
First seenAug 11, 2026

How to fix

Affected products

ProductAffected versionsFixed in
microsoft microsoft_365No range specified—
microsoft 365_appsNo range specified—
microsoft office_2019No range specified—
microsoft office_2021No range specified—
microsoft office_2024No range specified—
microsoft word2016—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.