CVE-2021-33766

high-risk
Published 2021-07-14

Microsoft Exchange Server Information Disclosure Vulnerability

Do I need to act?

!
93.6% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.3/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Microsoft

References (5)

Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-3376...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-798/
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-3376...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-798/
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
65
/ 100
high-risk
Severity 26/34 · High
Exploitability 27/34 · High
Exposure 12/34 · Low