CVE-2022-41040
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
- Record
CVE-2022-41040- CVSS 3.1
- 8.8 High
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 - Weakness
- CWE-918
- Updated
- 2026-11-02
EUVDEUVD-2022-44285
Microsoft Exchange Server Elevation of Privilege Vulnerability
- Record
EUVD-2022-44285- CVSS 3.1
- 8.8 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6ph7-8wxv-6gf2
Microsoft Exchange Server Elevation of Privilege Vulnerability.
Microsoft Exchange Server Elevation of Privilege Vulnerability.
- Record
GHSA-6ph7-8wxv-6gf2- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-269, CWE-918
- Updated
- 2026-11-02
CISA KEV No score
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.
- Record
CVE-2022-41040- Weakness
- CWE-918
- Updated
- 2026-11-02
NVD
Microsoft Exchange Server Elevation of Privilege Vulnerability
- Record
CVE-2022-41040- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-918
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Microsoft Exchange ProxyNotShell RCE | 2022-09-28 |
| PoC in GitHub | numanturle/CVE-2022-41040 | 2022-10-02 |
| PoC in GitHub | CentarisCyber/CVE-2022-41040_Mitigation | 2022-10-03 |
| PoC in GitHub | r3dcl1ff/CVE-2022-41040 | 2022-10-04 |
| PoC in GitHub | d3duct1v/CVE-2022-41040 | 2022-10-06 |
| PoC in GitHub | kljunowsky/CVE-2022-41040-POC | 2022-10-09 |
| PoC in GitHub | rjsudlow/proxynotshell-IOC-Checker | 2022-10-09 |
| PoC in GitHub | ITPATJIDR/CVE-2022-41040 | 2022-10-14 |
| PoC in GitHub | TaroballzChen/CVE-2022-41040-metasploit-ProxyNotShell | 2022-10-20 |
| PoC in GitHub | 0-Gram/CVE-2022-41040 | 2024-11-23 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Metasploit, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-41040 is a high vulnerability (CVSS 8.8) in Microsoft Exchange Server, published October 3, 2022. CISA lists it as known to be exploited, since September 30, 2022. EUVD reports exploitation since September 30, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 100.0%, the 99th percentile. No source names a fixed version.
References
msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040
kb.cert.org/vuls/id/915563
packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html
secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040
nvd.nist.gov/vuln/detail/CVE-2022-41040
github.com/advisories/GHSA-6ph7-8wxv-6gf2