CVE-2022-41082

HIGH KEV RANSOMWARE

Microsoft Exchange Server - Remote Code Execution via Untrusted Data Deserialization

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2022-41082 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added September 30, 2022, with confirmed use in ransomware campaigns. EIP tracks 12 public exploits from researchers including balki97, Diverto, soltanali0, including a Metasploit module exploits/windows/http/exchange_proxynotshell_rce.

AI-analyzed exploit summary This repository contains a functional PoC for CVE-2022-41082, a post-auth RCE vulnerability in Microsoft Exchange (ProxyNotShell OWASSRF). It includes a Python script to exploit the vulnerability and a PowerShell script (TabShell.ps1) for privilege escalation via CVE-2022-41076.

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

Exploits (12)

nomisec WORKING POC 95 stars
by balki97 · remote-auth
https://github.com/balki97/OWASSRF-CVE-2022-41082-POC

This repository contains a functional PoC for CVE-2022-41082, a post-auth RCE vulnerability in Microsoft Exchange (ProxyNotShell OWASSRF). It includes a Python script to exploit the vulnerability and a PowerShell script (TabShell.ps1) for privilege escalation via CVE-2022-41076.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server 2013, 2016, 2019 (pre-November 2022 patch)
Auth required
Prerequisites: Valid credentials for Exchange OWA · Network access to target Exchange server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 80 stars
by Diverto · infoleak
https://github.com/Diverto/nse-exchange

This repository provides an Nmap NSE script to detect the presence of CVE-2022-41082, a Microsoft Exchange vulnerability. It checks for virtual patching or workarounds but does not include exploit code for achieving RCE.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Exchange Server (unpatched versions affected by CVE-2022-41082)
No auth needed
Prerequisites: Network access to target Exchange server · Port 443 (HTTPS) open and accessible
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 3 stars
by soltanali0 · poc
https://github.com/soltanali0/CVE-2022-41082

This repository contains a Python-based PoC for CVE-2022-41082, an OWASSRF vulnerability in Microsoft Exchange servers. The exploit bypasses authentication and executes arbitrary commands via PowerShell, potentially leading to remote code execution (RCE).

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server
Auth required
Prerequisites: Valid credentials for an Exchange user · Network access to the target Exchange server · Remote PowerShell access enabled for at least one user
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 3 stars
by notareaperbutDR34P3r · infoleak
https://github.com/notareaperbutDR34P3r/http-vuln-CVE-2022-41082

This repository provides an Nmap NSE script to scan for CVE-2022-41082, a Microsoft Exchange Server Remote Code Execution Vulnerability. It includes instructions for checking both HTTP and HTTPS endpoints.

Classification
Scanner 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Theoretical
Target: Microsoft Exchange Server
No auth needed
Prerequisites: Nmap with NSE support · Network access to target Exchange Server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 2 stars
by SUPRAAA-1337 · infoleak
https://github.com/SUPRAAA-1337/CVE-2022-41082

This YAML file is a Nuclei template designed to detect CVE-2022-41082, a Microsoft Exchange Server vulnerability, by sending a crafted HTTP request to the autodiscover endpoint and checking for specific response patterns (401 status and 'x-owa-version' header). It does not contain exploit code but serves as a detection mechanism.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Exchange Server
No auth needed
Prerequisites: Network access to the target Exchange Server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec NO CODE 2 stars
by sikkertech · remote
https://github.com/sikkertech/CVE-2022-41082
nomisec WORKING POC 1 stars
by bigherocenter · remote-auth
https://github.com/bigherocenter/CVE-2022-41082-POC

This repository contains a functional PoC for CVE-2022-41082, a post-auth RCE vulnerability in Microsoft Exchange (ProxyNotShell OWASSRF). It includes a Python script for exploitation and a PowerShell script (TabShell.ps1) for privilege escalation via CVE-2022-41076.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server 2013, 2016, 2019 (pre-November 2022 patch)
Auth required
Prerequisites: Valid Exchange credentials · Network access to OWA endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP
by CyprianAtsyor · poc
https://github.com/CyprianAtsyor/LetsDefend-CVE-2022-41082-Exploitation-Attempt

This repository is a detailed writeup and incident report on an attempted exploitation of CVE-2022-41082, a critical RCE vulnerability in Microsoft Exchange Server. It includes analysis of the attack, mitigation strategies, and detection methods.

Classification
Writeup 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server 2013, 2016, 2019
No auth needed
Prerequisites: Access to the PowerShell endpoint on an exposed Exchange Server · CVE-2022-41040 for bypassing authentication
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER
by notareaperbutDR34P3r · infoleak
https://github.com/notareaperbutDR34P3r/vuln-CVE-2022-41082

This repository provides an Nmap script to scan for CVE-2022-41082, a vulnerability in Microsoft Exchange Server. It does not include exploit code but offers a detection method for both HTTP and HTTPS services.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Exchange Server (versions affected by CVE-2022-41082)
No auth needed
Prerequisites: Nmap installed · Network access to target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
by Orange Tsai, Spencer McIntyre, DA-0x43-Dx4-DA-Hx2-Tx2-TP-S-Q, Piotr Bazydło, Rich Warren, Soroush Dalili · rubypocwindows
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/exchange_proxynotshell_rce.rb

This Metasploit module exploits CVE-2022-41040 (SSRF) and CVE-2022-41082 (deserialization) to achieve RCE on Microsoft Exchange Server 2019 via authenticated Powershell backend interaction.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server 2019
Auth required
Prerequisites: Valid Exchange credentials · Exchange Server 2019 · Network access to port 443
devstral-2 · analyzed Feb 16, 2026 Full analysis →
patchapalooza SCANNER
by ZephrFish · remote
https://github.com/ZephrFish/NotProxyShellScanner

This repository contains a Python-based scanner for detecting CVE-2022-40140 and CVE-2022-41082 (NotProxyShell) vulnerabilities in Microsoft Exchange Server. It sends crafted HTTP requests to the target and checks for specific response patterns to determine potential vulnerability.

Classification
Scanner 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Exchange Server
No auth needed
Prerequisites: known email address of the target organization · known domain of the target organization
devstral-2 · analyzed Feb 23, 2026 Full analysis →
patchapalooza SCANNER
by NitinYadav00 · remote
https://github.com/NitinYadav00/Exploit-Microsoft-Exchange-Server-

The repository contains a script that automates domain discovery and Nmap scanning for CVE-2022-41082 (ProxyNotShell) using a custom NSE script. It does not include functional exploit code but aids in vulnerability detection.

Classification
Scanner 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Exchange Server 2013, 2016, 2019
No auth needed
Prerequisites: subfinder · nmap · proxynotshell_checker.nse
devstral-2 · analyzed Feb 23, 2026 Full analysis →

Scores

CVSS v3 8.0
EPSS 0.9996
EPSS Percentile 100.0%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-09-30
VulnCheck KEV 2022-09-29
InTheWild.io 2022-09-30
ENISA EUVD EUVD-2022-44326
Ransomware Use Confirmed
CWE
CWE-502
Status published
Products (3)
microsoft/exchange_server 2013 cumulative_update_23
microsoft/exchange_server 2016 cumulative_update_22 (2 CPE variants)
microsoft/exchange_server 2019 cumulative_update_11 (2 CPE variants)
Published Oct 03, 2022
KEV Added Sep 30, 2022
Tracked Since Feb 18, 2026