CVE-2022-41082VulnerabilityPublished 09/30/2022Updated 10/24/2026
CVE-2022-41082: Microsoft Exchange Server Remote Code Execution Vulnerability
Affects Microsoft Exchange ServerSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 09/30/2022
- KEV deadline
- 10/21/2022
- Ransomware
- Used in ransomware campaigns
- EPSS
- 100.0% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply updates per vendor instructions.
Description
Microsoft Exchange Server contains an unspecified vulnerability that allows for authenticated remote code execution. Dubbed "ProxyNotShell," this vulnerability is chainable with CVE-2022-41040 which allows for the remote code execution.