CVE-2026-70281

High

Description

Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.

SeverityHigh
CVSS7.5
Exploit probability—
ProductMicrosoft 365
PublishedOct 13, 2026
First seenOct 13, 2026

How to fix

Affected products

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

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.

CVE-2026-70281 · Microsoft 365 · Dark Radar