CVE Watch—

CVE-2022-41040

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

CVSS

—

No CVSS

EPSS

100.0%

p100

KEV

YES

Sep 30, 2022

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

100.0%EPSS · 30 days100.0%

2026-08-022026-08-30

KEV catalog record

Product

Microsoft / Exchange Server

Vulnerability

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

Added to KEV

Sep 30, 2022

Remediate by

Oct 21, 2022

Known ransomware use

Yes

Summary description

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.

Required action

Apply updates per vendor instructions.

Notes

https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/; https://nvd.nist.gov/vuln/detail/CVE-2022-41040

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