CVE-2021-33766—Microsoft Exchange Server Information Disclosure

PUBLISHEDvulnerability record
2022-01-18 · last modified June 21, 2025

Metadata

CVE ID:
CVE-2021-33766
Project:
Microsoft
Product:
Exchange Server
Date Added:
2022-01-18
Due Date:
2022-02-01
Last Updated:
June 21, 2025

Vulnerability Name

Microsoft Exchange Server Information Disclosure

Description

Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply updates per vendor instructions.

Additional Notes

  • https://nvd.nist.gov/vuln/detail/CVE-2021-33766

Related Weaknesses

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