Home / Vulnerabilities / CVE-2022-41040
HIGH SEVERITY Ransomware Linked
CVE-2022-41040 Microsoft · Exchange Server

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

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

Technical Severity

CVSS v3.1 Metrics

HIGH
8.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood

EPSS Prediction

94.19 %
Predictive Probability
Percentile Rank
99.9 th

Documented as more likely to be exploited than 99.9% of known CVEs.

Detection Date

Sep 30, 2022

Remediation Due

Oct 21, 2022

CISA Catalog Active

Threat Analysis

Microsoft Exchange Server allows for server-side request forgery. Dubbed "ProxyNotShell," this vulnerability is chainable with CVE-2022-41082 which allows for 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-2022-41040