CVE-2018-8581
Published 2018-11-14 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2018-8581 is a high-severity (CVSS 7.4) vulnerability in Microsoft Exchange Server. CISA added it to the Known Exploited Vulnerabilities catalog on March 3, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 17, 2022. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →Description
An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA Known-Exploited Vulnerability
Product: Microsoft — Exchange Server
Name: Microsoft Exchange Server Privilege Escalation Vulnerability
Date added: 2022-03-03 · Due: 2022-03-17
Required action: Apply updates per vendor instructions.
References
- http://www.securityfocus.com/bid/105837
- http://www.securitytracker.com/id/1042141
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8581
- http://www.securityfocus.com/bid/105837
- http://www.securitytracker.com/id/1042141
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8581
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8581