Sep 2026: Skype for Business Spoofing Vulnerability
CVE-2026-63523 Published on September 8, 2026
Skype for Business Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Skype for Business allows an unauthorized attacker to perform spoofing over a network.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-63523 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-63523
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Affected Versions
Microsoft Skype for Business Server 2015 CU13:- Version 9319.0 and below 6.0.9319.885 is affected.
- Version 2046.0 and below 7.0.2046.569 is affected.
- Version 2046.0 and below 7.0.2046.879 is affected.