CVE-2026-66308

Out-of-bounds read in Skype for Business allows an authorized attacker to deny service over a network.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

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-2026-66308	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13::::::
	cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13_hotfix_2::::::

Configuration 2 (hide)

OR	cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8::::::
	cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix1::::::
	cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix2::::::

Configuration 3 (hide)

cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition:7.0.2046.849:*:*:*:*:*:*:*

History

16 Sep 2026, 19:25

Type	Values Removed	Values Added
CPE		cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8:::::: cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix1:::::: cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_8_hotfix2:::::: cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13_hotfix_2:::::: cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13:::::: cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition:7.0.2046.849:::::::*
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66308 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66308 - Patch, Vendor Advisory
First Time		Microsoft Microsoft skype For Business Server Subscription Edition Microsoft skype For Business Server

Information

Published : 2026-09-08 19:18

Updated : 2026-09-16 19:25

NVD link : CVE-2026-66308

Mitre link : CVE-2026-66308

CVE.ORG link : CVE-2026-66308

JSON object : View

Products Affected

microsoft

skype_for_business_server
skype_for_business_server_subscription_edition

CWE

CWE-125

Out-of-bounds Read

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