Microsoft Exchange ECP Probe (ProxyShell / ProxyLogon) for 2026-09-21
Sep 21, 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 | 2 | 66.7% |
| United States of America | 1 | 33.3% |
IP Address : ASN : City/Provider
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206.81.24.227 : AS14061 digitalocean llc : Frankfurt am Main
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206.81.24.74 : AS14061 digitalocean llc : Frankfurt am Main
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209.38.248.17 : ASNone : United States of America