CVE-2022-41040

HIGHNVD 8.89.0▲Trending — 5 sources updated this weekExploited in the wild

8.8

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS v3: 8.8
EG Score: 9.0(high)
EPSS: 99.9%
KEV: ⚠ Exploited

Published

October 3, 2022

Last Modified

October 30, 2025

Advisory Details (6)

Auto-updated Jun 2, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cert, cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040

generic🔴 Active Exploitation

Microsoft November Patch Tuesday 2022 Addresses 65 Vulnerabilities inc | SecPod

https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/

cert Patch Available

VU#915563 - Microsoft Exchange vulnerable to server-side request forgery and remote code execution.

https://www.kb.cert.org/vuls/id/915563

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040

generic

Packet Storm

http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

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

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2022-410402022-09-30
Microsoft Exchange Server Elevation of Privilege Vulnerability

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 14:28 UTCEG score recompute
2026-06-04 14:28 UTCVendor advisory
2026-06-04 14:28 UTCGHSA enrichment
2026-06-04 10:08 UTCEG score recompute
2026-06-04 10:08 UTCVendor advisory
2026-06-04 10:08 UTCGHSA enrichment
2026-06-04 05:48 UTCEG score recompute
2026-06-04 05:48 UTCVendor advisory
2026-06-04 05:48 UTCGHSA enrichment
2026-06-04 01:28 UTCEG score recompute
2026-06-04 01:28 UTCVendor advisory
2026-06-04 01:28 UTCGHSA enrichment
2026-06-03 21:08 UTCEG score recompute
2026-06-03 21:08 UTCVendor advisory
2026-06-03 21:08 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 16:48 UTCEG score recompute
2026-06-03 16:48 UTCVendor advisory
2026-06-03 16:48 UTCGHSA enrichment
2026-06-03 12:28 UTCEG score recompute

Publicly available exploits

(8 references)

Working exploit code is in the public domain (2 Metasploit modules) (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCTaroballzChen/CVE-2022-41040-metasploit-ProxyNotShell
First seen Oct 20, 2022
the metasploit script(POC) about CVE-2022-41040. Microsoft Exchange are vulnerable to a server-side request forgery (SSRF) attack. An authenticated attacker can use the vulnerability to elevate privileges.
Open source ↗
GitHub PoCrjsudlow/proxynotshell-IOC-Checker
First seen Oct 9, 2022
Script to check for IOC's created by ProxyNotShell (CVE-2022-41040 & CVE-2022-41082)
Open source ↗
GitHub PoCkljunowsky/CVE-2022-41040-POC
First seen Oct 9, 2022
CVE-2022-41040 - Server Side Request Forgery (SSRF) in Microsoft Exchange Server
Open source ↗
GitHub PoCd3duct1v/CVE-2022-41040
First seen Oct 6, 2022
Code set relating to CVE-2022-41040
Open source ↗
GitHub PoCr3dcl1ff/CVE-2022-41040
First seen Oct 4, 2022
mitigation script for MS Exchange server vuln
Open source ↗
GitHub PoCnumanturle/CVE-2022-41040
First seen Oct 2, 2022
CVE-2022-41040 nuclei template
Open source ↗
Metasploitexploit/windows/http/exchange_proxynotshell_rce✓ verified
First seen Sep 30, 2022
ProxyNotShell — Exchange Server post-auth RCE via PowerShell remoting.
Open source ↗
Metasploitexploit/windows/http/exchange_proxynotshell_rce✓ verified
First seen Sep 28, 2022
Microsoft Exchange ProxyNotShell RCE
Open source ↗

Frequently asked(6)

What is CVE-2022-41040?

CVE-2022-41040 is a high vulnerability published on October 3, 2022. Microsoft Exchange Server Elevation of Privilege Vulnerability

When was CVE-2022-41040 disclosed?

CVE-2022-41040 was first published in the National Vulnerability Database on October 3, 2022, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-41040 actively exploited?

Yes. CISA added CVE-2022-41040 to the Known Exploited Vulnerabilities catalog on September 30, 2022, affecting Microsoft Exchange Server. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

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

CVE-2022-41040 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2022-41040?

CVE-2022-41040 affects Microsoft Exchange Server. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2022-41040?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-41040, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-41040

Explore →

Is Your Infrastructure Affected by CVE-2022-41040?

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CVE-2022-41040

Published

Last Modified

Advisory Details (6)

Known Exploited Vulnerabilities Catalog | CISA

Microsoft November Patch Tuesday 2022 Addresses 65 Vulnerabilities inc | SecPod

VU#915563 - Microsoft Exchange vulnerable to server-side request forgery and remote code execution.

Security Update Guide - Microsoft Security Response Center

Packet Storm

Security Update Guide - Microsoft Security Response Center

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-41040?

Same vendor

Same CWE

CVE-2022-41040

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

Known Exploited Vulnerabilities Catalog | CISA

Microsoft November Patch Tuesday 2022 Addresses 65 Vulnerabilities inc | SecPod

VU#915563 - Microsoft Exchange vulnerable to server-side request forgery and remote code execution.

Security Update Guide - Microsoft Security Response Center

Packet Storm

Security Update Guide - Microsoft Security Response Center

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-41040?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (6)

Frequently asked(6)

Related CVEs(same vendor + same CWE)