CVE-2026-69378

Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69378	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23::::::
	cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14::::::
	cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15::::::
	cpe:2.3:a:microsoft:exchange_server_subscription_edition::::::::

History

29 Sep 2026, 15:54

Type	Values Removed	Values Added
First Time		Microsoft exchange Server Subscription Edition Microsoft exchange Server Microsoft
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69378 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69378 - Patch, Vendor Advisory
CPE		cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:::::: cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:::::: cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:::::: cpe:2.3:a:microsoft:exchange_server_subscription_edition::::::::

Information

Published : 2026-09-08 18:18

Updated : 2026-09-29 15:54

NVD link : CVE-2026-69378

Mitre link : CVE-2026-69378

CVE.ORG link : CVE-2026-69378

JSON object : View

Products Affected

microsoft

exchange_server
exchange_server_subscription_edition

CWE

CWE-674

Uncontrolled Recursion

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