CVE-2023-32031

Microsoft Exchange Server Remote Code Execution Vulnerability

CVE-2023-32031 is fixed in 3 products on 1 platform, first by KB5025903, released June 13, 2023. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent

CVSS

8.8

Important

Exploitation

More likely

Vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.8145

99th percentile

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft Exchange Server 2016 Cumulative Update 23	KB5025903	Jun 13, 2023
Microsoft Exchange Server 2019 Cumulative Update 12	KB5026261	Jun 13, 2023
Microsoft Exchange Server 2019 Cumulative Update 13	KB5026261	Jun 13, 2023

Details

Published
June 13, 2023
Weakness
Deserialization of Untrusted Data
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32031

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