Microsoft Exchange ECP Probe (ProxyShell / ProxyLogon) for 2026-09-19
Sep 19, 2026
Exploitation
Last Updated: 00:00 UTC
The Exchange Control Panel (/ecp/) is the attack surface for ProxyLogon (CVE-2021-26855) and ProxyShell (CVE-2021-34473/34523/31207). Both exploit chains begin with ECP requests and achieve unauthenticated RCE leading to ASPX webshell deployment on the Exchange server.
CVE References
MITRE ATT&CK
Tactic: Initial Access (TA0001)
Technique: T1190 — Exploit Public-Facing Application
Observed URIs
Attackers by Country
| Germany | 3 | 60.0% |
| The Netherlands | 1 | 20.0% |
| United States | 1 | 20.0% |
IP Address : ASN : City/Provider
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139.59.132.8 : AS14061 DigitalOcean, LLC : Frankfurt am Main
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159.89.12.166 : AS14061 DigitalOcean, LLC : Frankfurt am Main
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167.99.210.137 : AS14061 DigitalOcean, LLC : Amsterdam
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172.180.64.72 : AS8075 Microsoft Corporation : Phoenix
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207.154.197.113 : AS14061 DigitalOcean, LLC : Frankfurt am Main