SARA / Free Tools / CVE / CVE-2022-41040

CVE-2022-41040 — Microsoft Exchange Server Server-Side Request Forgery Vulnerability

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS

8.8 HIGH

EPSS

94.19% (top 0.10%)

CWE

—

Published

2022-10-03T00:00:00.000Z

Last modified

2025-10-21T23:15:33.946Z

CVSS vector

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

CISA KEV — Actively Exploited

Added to KEV

2022-09-30

BOD 22-01 due

2022-10-21

Ransomware use

Known

View KEV detail

01What is this vulnerability?

Microsoft Exchange Server Elevation of Privilege Vulnerability

Vendor	Product	Versions
Microsoft	Microsoft Exchange Server 2013 Cumulative Update 23	15.00.0
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 22	15.0.0
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 11	15.02.0
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 12	15.02.0
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 23	15.01.0

Yes — actively exploited. Added to the CISA KEV catalog on 2022-09-30. Ransomware use: Known.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040

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