CVE Record
[ HIGH ]CVE-2021-42321
Microsoft Exchange Server Remote Code Execution Vulnerability
An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.
- Vendor
- Microsoft
- Product
- Exchange
- CVSS
- 8.8
- EPSS (exploit probability)
- 90.4%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Published
An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.
Added to CISA’s Known Exploited Vulnerabilities catalog on 2021-11-17. Required action per CISA: Apply updates per vendor instructions. Due date: 2021-12-01.
This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.