CVE-2018-8154

Microsoft Exchange Memory Corruption Vulnerability

CVE-2018-8154 is fixed in 7 products on 1 platform, first by KB4091243, released May 8, 2018. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
n/a
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.2364
97th percentile

<p>A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. An attacker could then install programs; view, change, or delete data; or create new accounts.</p> <p>Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Exchange handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 21 KB4091243 May 8, 2018
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 24 KB4458321 May 8, 2018
Microsoft Exchange Server 2013 Cumulative Update 19 KB4092041 May 8, 2018
Microsoft Exchange Server 2013 Cumulative Update 20 KB4092041 May 8, 2018
Microsoft Exchange Server 2013 Service Pack 1 KB4092041 May 8, 2018
Microsoft Exchange Server 2016 Cumulative Update 8 KB4092041 May 8, 2018
Microsoft Exchange Server 2016 Cumulative Update 9 KB4092041 May 8, 2018