Rule Library
Sigma Rules
2 rules found for "CVE-2021-26858"
3,731Total
3,132Detection
457Emerging
139Hunting
Emerging Threathightest
CVE-2021-26858 Exchange Exploitation
Detects possible successful exploitation for vulnerability described in CVE-2021-26858 by looking for creation of non-standard files on disk by Exchange Server’s Unified Messaging service which could indicate dropping web shells or other malicious content
WindowsFile Event
Bhabesh RajWed Mar 032021
Emerging Threatcriticaltest
ProxyLogon Reset Virtual Directories Based On IIS Log
When exploiting this vulnerability with CVE-2021-26858, an SSRF attack is used to manipulate virtual directories
Web Server Log
François HubautTue Aug 102021