What is CVE-2026-21535?

CVE-2026-21535 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Microsoft Teams Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-21535 cover?

CVE-2026-21535 covers the following CVE IDs: CVE-2026-21535. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-21535?

CVE-2026-21535 has a CVSS v3 base score of 8.2, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-21535?

CVE-2026-21535 affects 1 product, including: Microsoft Teams.

CVE-2026-21535CriticalCVSS 8.2

Microsoft Teams Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

February 19, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-21535 →

📋 Description

Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.

🎯 Affected products1

Microsoft Teams

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21535