CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Dec 1, 2021
Description
An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.
EPSS — Exploit Probability
93.4%
Higher than 99.8% of all CVEs
Required Action
https://nvd.nist.gov/vuln/detail/CVE-2021-42321
Risk Assessment
CRITICALIn CISA KEV
High EPSS
Ransomware
Details
- Severity
- High
- EPSS
- 93.4%
- CISA KEV
- Yes
- Ransomware
- Known
- Articles
- 0
Timeline
Published
Nov 17, 2021
Added to KEV
Nov 17, 2021
Remediation Due
Dec 1, 2021