Vulnerability identifier: #VU51169

Vulnerability risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-26858

CWE-ID: CWE-20

Exploitation vector: Network

Exploits in database: 1

• April 1, 2021
  • exprolog (ProxyLogon Full Exploit Chain PoC (CVE-2021–26855, CVE-2021–26857, CVE-2021–26858, CVE-2021–27065)) [Github]

Impact: Code execution

Vulnerable software:
Microsoft Exchange Server
Server applications / Mail servers

Vendor: Microsoft