CVE-2021-42321
high-risk
Published 2021-11-10
Microsoft Exchange Server Remote Code Execution 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
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (4)
Affected Vendors
References (7)
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
67
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
27/34 · High
Exposure
10/34 · Low