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CVE-2022-41040

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

8.8
CVSS
100.0%
EPSS (exploit prob.)
100.0%
EPSS percentile
Yes
Actively exploited
Yes
Ransomware use
2022-09-30
Added
→ 0.0 pts
30-day EPSS trend

Summary

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.

Affected software

Vendor: Microsoft  ·  Product: Exchange Server

Weakness types (CWE):

CWE-918

What to do

This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.

Related vulnerabilities in Microsoft

CVENameEPSSExploited
CVE-2025-53770 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability 100.0% Yes
CVE-2021-34473 Microsoft Exchange Server Remote Code Execution Vulnerability 100.0% Yes
CVE-2019-0708 Microsoft Remote Desktop Services Remote Code Execution Vulnerability 100.0% Yes
CVE-2015-1635 Microsoft HTTP.sys Remote Code Execution Vulnerability 100.0% Yes
CVE-2021-26855 Microsoft Exchange Server Remote Code Execution Vulnerability 100.0% Yes
CVE-2025-49704 Microsoft SharePoint Code Injection Vulnerability 100.0% Yes
CVE-2021-34523 Microsoft Exchange Server Privilege Escalation Vulnerability 100.0% Yes
CVE-2023-29357 Microsoft SharePoint Server Privilege Escalation Vulnerability 100.0% Yes

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Sources: CISA KEV catalog · NVD · FIRST EPSS

This product uses the NVD API but is not endorsed or certified by the NVD.

All information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.