Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.

Project Subscriptions

Vendors Products
Microsoft Subscribe
Skype For Business Server 2015 Subscribe
Skype For Business Server 2019 Subscribe
Skype For Business Server Subscription Edition Subscribe
Skype For Business Server Subscription Edition Rtm Subscribe
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
Title Skype for Business Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft skype For Business Server 2015
Microsoft skype For Business Server 2019
Microsoft skype For Business Server Subscription Edition
Microsoft skype For Business Server Subscription Edition Rtm
Weaknesses CWE-639
CPEs cpe:2.3:a:microsoft:skype_for_business_server_2015:*:cu13:*:*:*:*:*:*
cpe:2.3:a:microsoft:skype_for_business_server_2019:*:cu8:*:*:*:*:*:*
cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition:*:cu1:*:*:*:*:*:*
cpe:2.3:a:microsoft:skype_for_business_server_subscription_edition_rtm:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft skype For Business Server 2015
Microsoft skype For Business Server 2019
Microsoft skype For Business Server Subscription Edition
Microsoft skype For Business Server Subscription Edition Rtm
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-13T21:35:27.521Z

Reserved: 2026-09-04T18:18:19.324Z

Link: CVE-2026-85873

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:21:14.780

Modified: 2026-10-13T21:19:30.497

Link: CVE-2026-85873

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses