Home / Vulnerabilities / CVE-2022-41082
HIGH SEVERITY Ransomware Linked
CVE-2022-41082 Microsoft · Exchange Server

Microsoft Exchange Server Remote Code Execution Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

HIGH
8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood

EPSS Prediction

90.77 %
Predictive Probability
Percentile Rank
99.6 th

Documented as more likely to be exploited than 99.6% of known CVEs.

Detection Date

Sep 30, 2022

Remediation Due

Oct 21, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/

https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2022-41082