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CVE-2021-33766
HIGHCISA KEV7.3
Description
Microsoft Exchange Server Information Disclosure Vulnerability
CVE Details
CVSS v3.1 Score7.3
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published7/14/2021
Last Modified10/29/2025
Sourcekev
Honeypot Sightings0
CISA KEV
VendorMicrosoft
ProductExchange Server
Vulnerability NameMicrosoft Exchange Server Information Disclosure
KEV Date Added2022-01-18
Remediation Due Date2022-02-01
Ransomware UseUnknown
Affected Products
microsoft:exchange_server
References
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766(secure@microsoft.com)
https://www.zerodayinitiative.com/advisories/ZDI-21-798/(secure@microsoft.com)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766(af854a3a-2127-422b-91ae-364da2661108)
https://www.zerodayinitiative.com/advisories/ZDI-21-798/(af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33766(134c704f-9b21-4f2e-91b3-4a467353bcc0)
IOC Correlations
No correlations recorded
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