high7.3Known exploited
CVE-2021-33766
Microsoft Exchange Server Information Disclosure
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2022-01-18. Federal due date: 2022-02-01.
Apply updates per vendor instructions.
Impact
Microsoft Exchange Server Information Disclosure Vulnerability
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Exchange Server | Versions 2013, 2016, 2019 |
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33766
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766
- https://www.zerodayinitiative.com/advisories/ZDI-21-798/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33766