7.1

CVE-2026-66305

Skype for Business Spoofing Vulnerability

Use of client-side authentication in Skype for Business allows an authorized attacker to perform spoofing over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Skype For Business Server Version 2015 Update cumulative_update_13
Microsoft ≫ Skype For Business Server Version 2015 Update cumulative_update_13_hotfix_2
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8_hotfix1
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8_hotfix2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.227
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.1 2.8 4.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CWE-603 Use of Client-Side Authentication

A client/server product performs authentication within client code but not in server code, allowing server-side authentication to be bypassed via a modified client that omits the authentication check.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66305
Patch
Vendor Advisory