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Unrated severityCISA KEVNVD Advisory· Published Jul 14, 2021· Updated Oct 21, 2025

Microsoft Exchange Server Information Disclosure Vulnerability

CVE-2021-33766

Description

Microsoft Exchange Server Information Disclosure Vulnerability

Affected products

5

Microsoft/Exchange Serverv55 versions
cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*range: 15.02.0
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*range: 15.01.0
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*range: 15.00.0
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*range: 15.01.0
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*range: 15.02.0

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

2

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766mitrex_refsource_MISC
www.zerodayinitiative.com/advisories/ZDI-21-798/mitrex_refsource_MISC

News mentions

0

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