Microsoft Exchange ECP Probe (ProxyShell / ProxyLogon) for 2026-05-02
May 02, 2026
WebExploit
Last Updated: 12:00 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
| United States of America | 1 | 33.3% |
| Singapore | 1 | 33.3% |
| United Kingdom of Great Britain and Northern Ireland | 1 | 33.3% |
IP Address : ASN : City/Provider
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170.187.158.208 : AS63949 linode llc : Atlanta
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206.189.95.232 : AS14061 digitalocean llc : Singapore
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209.97.180.8 : AS14061 digitalocean llc : London