CVE-2022-41040
HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2022-10-03
secure@microsoft.com
8.8
CVSS 3.1
Share
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
5
Analysis Generated
Mar 26, 2026 - 11:19 vuln.today
Added to CISA KEV
Oct 30, 2025 - 19:36 cisa
CISA KEV
PoC Detected
Oct 30, 2025 - 19:36 vuln.today
Public exploit code
Patch released
Oct 30, 2025 - 19:36 nvd
Patch available
CVE Published
Oct 03, 2022 - 01:15 nvd
HIGH 8.8
DescriptionNVD
Microsoft Exchange Server Elevation of Privilege Vulnerability
AnalysisAI
Microsoft Exchange Server contains an SSRF vulnerability known as 'ProxyNotShell' that allows authenticated attackers to access backend Exchange services, chained with CVE-2022-41082 for remote code execution.
Technical ContextAI
The CWE-918 SSRF exploits Exchange's Client Access proxy to access the PowerShell backend, similar to ProxyShell but requiring valid credentials. The vulnerability allows an authenticated mailbox user to forge requests to internal Exchange services.
Affected ProductsAI
Microsoft Exchange Server 2013/2016/2019
RemediationAI
Apply Microsoft security updates. Implement URL rewrite rules as a temporary mitigation. Restrict Exchange PowerShell access. Enable MFA for all Exchange accounts.
Share
External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).