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MSRC compact vulnerability detail

CVE-2026-33823 · Microsoft Team Events Portal Information Disclosure Vulnerability

Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.

Severity
Critical
Impact
Information Disclosure
CVSS
9.6 base · 8.3 temporal
Release
2026-05-07
Signals
Microsoft Teams Information Disclosure Exploited: No Publicly disclosed: No Exploitability: N/A
CWE
CWE-285: Improper Authorization
Patch Diff
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Resolved binary override
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Description
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
FAQ / Articles
Microsoft Teams Information Disclosure Vulnerability
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
FAQ
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability? This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.