CVE-2022-41040

HIGH8.8

CISA KEV

Published 2022-10-03 · Updated 2026-06-17 · Source secure@microsoft.com

Summary

CVE-2022-41040 is a high-severity (CVSS 8.8) vulnerability in Microsoft Exchange Server. CISA added it to the Known Exploited Vulnerabilities catalog on September 30, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by October 21, 2022. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

All 390 known-exploited Microsoft vulnerabilities →

Description

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-918CWE-918

CISA Known-Exploited Vulnerability

Product: Microsoft — Exchange Server

Name: Microsoft Exchange Server Server-Side Request Forgery Vulnerability

Date added: 2022-09-30 · Due: 2022-10-21

USED IN RANSOMWARE

Required action: Apply updates per vendor instructions.

References

View on NVD

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