CVE-2018-8581
Microsoft Exchange Server Privilege Escalation Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Exchange Server, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Mar 17, 2022.
Patch status
Official fix available since
Apply the vendor's update to every affected system. Check the fixed-in versions below where known.
Basis: NVD patch reference
Description
An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Source |
|---|---|---|---|
| Exchange Server | Microsoft | 2010; 2013; 2016; 2019 | KEV |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2018-8581 scored CVSS 7.4: Microsoft Exchange Server, Microsoft Exchange Server Privilege Escalation Vulnerability
CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched Exchange Server systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
- Patch releasedUpdateKEV
Patch released for CVE-2018-8581: Microsoft Exchange Server, Microsoft Exchange Server Privilege Escalation Vulnerability
An official fix is now available for Microsoft Exchange Server. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference
1 earlier event is available with a subscription. See plans.
Coverage
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