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CVE-2026-69641

Last refreshed2026-10-03

Status: UPDATED  |  Advisory ID: CVE-2026-69641

Key Details

CVECVE-2026-69641
CVSS Score / Version9.1 (Critical) / CVSS v3.1
Updated2026-09-22
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is high; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productsMicrosoft Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Microsoft Exchange Server Subscription Edition RTM, and Microsoft exchange_server_subscription_edition
Classified asCWE-862 (Missing Authorization)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 23
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 14
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 15
MicrosoftMicrosoft Exchange Server Subscription Edition RTM
Microsoftexchange_server_subscription_edition
SubsystemsGeneral OT
SectorsMultiple

What to Know

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

What to Do

Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-69641
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-69641
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69641