Is CVE-2022-41040 in the CISA KEV catalog?

Yes. CVE-2022-41040 is on the CISA Known Exploited Vulnerabilities list, added 2022-09-30, and has known ransomware campaign use.

What is the CVSS severity of CVE-2022-41040?

CVE-2022-41040 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2022-41040?

CVE-2022-41040 has an EPSS score of 99.94% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-41040?

Install KB5019758 for Microsoft Exchange Server 2013 Cumulative Update 23. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2022-41040

HIGHCISA KEVEPSS 100th pctl

8.8

CVSS v3

NVD

Description

Microsoft Exchange Server Elevation of Privilege Vulnerability

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available

Microsoft Exchange Server 2013 Cumulative Update 23Microsoft

Install:KB5019758Microsoft

Microsoft Exchange Server 2016 Cumulative Update 22Microsoft

Install:KB5019758Microsoft

Microsoft Exchange Server 2016 Cumulative Update 23Microsoft

Install:KB5019758Microsoft

Microsoft Exchange Server 2019 Cumulative Update 11Microsoft

Install:KB5019758Microsoft

Microsoft Exchange Server 2019 Cumulative Update 12Microsoft

Install:KB5019758Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

99.94%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

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.

Apply updates per vendor instructions.

Remediation due: 2022-10-21

Associated with ransomware campaigns

References

Patch2

Exploit1

packetstormsecurity.com

Third-Party Advisory2

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21893	High	8.2	100%	KEV + Ransom	-
CVE-2021-40438	Critical	9.0	100%	KEV	Fix
CVE-2021-34473	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-26855	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-22986	Critical	9.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-30.