CVE-2021-42321
KEV · ransomware High · CVSS 8.8- CVSS
- 8.8
- nvd
- EPSS
- 90.4%
- 100th pct
- KEV
- Listed
- ransomware
- Class
- other
- NVD-CWE-Other
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42321
- http://packetstormsecurity.com/files/166153/Microsoft-Exchange-Server-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/168131/Microsoft-Exchange-Server-ChainedSerializationBinder-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42321
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42321
Status: profiled · ingested 2026-08-19T18:00:49.000Z