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Advisory severityMedium5.9Vendor: HighMicrosoft Server

Medium [CVE-2026-69382] Microsoft Exchange Server Information Disclosure Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2026-69382 affecting Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2016 Cumulative Update 23.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-69382 Source published Source updated

VulniPulse record published Record updated

CVE-2026-69382
Affected products & platforms
Microsoft ServerExchange Server
Open source advisory

Summary

Microsoft Exchange Server Information Disclosure Vulnerability

Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM.

Is CVE-2026-69382 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-69382 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-69382?

Upgrade to a fixed release named by Microsoft:

  • KB5121609 (build 15.02.1748.051)
  • KB5121610 (build 15.02.1544.046)
  • KB5121611 (build 15.01.2507.073)
  • KB5121608 (build 15.02.2562.049)

Confirm against the vendor advisory before you patch.

Affected versions
  • Microsoft Exchange Server 2016 Cumulative Update 23 15.01.0.0 before 15.01.2507.073
  • Microsoft Exchange Server 2019 Cumulative Update 14 15.02.0.0 before 15.02.1544.046
  • Microsoft Exchange Server 2019 Cumulative Update 15 15.02.0.0 before 15.02.1748.051
  • Microsoft Exchange Server Subscription Edition RTM 15.02.0.0 before 15.02.2562.049

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • KB5121609 (build 15.02.1748.051)
  • KB5121610 (build 15.02.1544.046)
  • KB5121611 (build 15.01.2507.073)
  • KB5121608 (build 15.02.2562.049)

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Install the applicable security update for your platform: KB5121609, KB5121610, KB5121611, KB5121608 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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