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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-55009

Microsoft Exchange Server Elevation of Privilege Vulnerability

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Status
Published
Published
Updated
Assigning organization
microsoft

Description

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23

  • 15.01.0.0 to < 15.01.2507.071affected

Microsoft Microsoft Exchange Server 2019 Cumulative Update 14

  • 15.02.0.0 to < 15.02.1544.043affected

Microsoft Microsoft Exchange Server 2019 Cumulative Update 15

  • 15.02.0.0 to < 15.02.1748.048affected

Microsoft Microsoft Exchange Server Subscription Edition RTM

  • 15.02.0.0 to < 15.02.2562.045affected

References