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CVE-2026-42897

KEV
Updated Aug 10, 2026 · PUBLISHED
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Description

Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.

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Affected packages

PackageVendor / ProductVersion rangeStatus
Microsoft Exchange Server 2016 Cumulative Update 23Microsoft / Microsoft Exchange Server 2016 Cumulative Update 23>= 15.01.0.0, < 15.01.2507.069affected
Microsoft Exchange Server 2019 Cumulative Update 14Microsoft / Microsoft Exchange Server 2019 Cumulative Update 14>= 15.02.0.0, < 15.02.1544.041affected
Microsoft Exchange Server 2019 Cumulative Update 15Microsoft / Microsoft Exchange Server 2019 Cumulative Update 15>= 15.02.0.0, < 15.02.1748.046affected
Microsoft Exchange Server Subscription Edition RTMMicrosoft / Microsoft Exchange Server Subscription Edition RTM>= 15.02.0.0, < 15.02.2562.043affected