CVE-2019-0586

Microsoft Exchange Memory Corruption Vulnerability

CVE-2019-0586 is fixed in 3 products on 1 platform, first by KB4471389, released January 8, 2019. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
n/a
Important
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.1540
96th 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 2016 Cumulative Update 10 KB4471389 Jan 8, 2019
Microsoft Exchange Server 2016 Cumulative Update 11 KB4471389 Jan 8, 2019
Microsoft Exchange Server 2019 KB4471389 Jan 8, 2019

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