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Servers and applications

CVE-2018-8581

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Mar 2022.

Severity
High 7.4
Published
14 Nov 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
28% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server
  • Version 2010
  • Version 2013
  • Version 2016
  • Version 2019

Known exploited

CISA name
Microsoft Exchange Server Privilege Escalation Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
17 Mar 2022
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-8581
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-8581