CVE-2026-21535: Microsoft Teams Information Disclosure Vulnerability
Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.
Other sources
Microsoft Teams Information Disclosure Vulnerability
— Microsoft
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21535?
CVE-2026-21535 is classified as a medium-severity vulnerability due to improper access control leading to potential information disclosure.
How do I fix CVE-2026-21535?
To remediate CVE-2026-21535, ensure that you are using the latest version of Microsoft Teams that includes security patches addressing this vulnerability.
What types of information could be disclosed due to CVE-2026-21535?
CVE-2026-21535 allows unauthorized attackers to potentially disclose sensitive information shared within Microsoft Teams.
Who is affected by CVE-2026-21535?
Any user or organization utilizing Microsoft Teams may be impacted by CVE-2026-21535 if they have not applied the necessary security updates.
When was CVE-2026-21535 disclosed?
CVE-2026-21535 was disclosed as a vulnerability that affects Microsoft Teams, emphasizing the need for timely security updates.