CVE-2018-8581
Microsoft Exchange Server Privilege Escalation Vulnerability
Published Nov 13, 2018 · updated Jun 16, 2026 · microsoft exchange server
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Nov 13, 2018 · Catalog
Detected
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
Mar 3, 2022 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Mar 17, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
Required action
Apply updates per vendor instructions.
CISA due date Mar 17, 2022
Affected
- cpe microsoft/exchange server2010
- cpe microsoft/exchange server2013
- cpe microsoft/exchange server2016
- cpe microsoft/exchange server2019
- vendor Microsoft Exchange Serverversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2018-8581
A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.
cisa.gov - CVE.orgVulnerability recordCVE-2018-8581
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2018-8581
30-day exploitation probability 27.4%
first.org - NIST NVDVulnerability recordCVE-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.
nvd.nist.gov