CVE-2026-63523
Skype for Business Spoofing Vulnerability
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | microsoft |
| Product | skype for business server 2015 cu13 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Sep 8, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Skype for Business Server 2015 CU13
9319.0 < 6.0.9319.885
Microsoft / Skype for Business Server 2019 CU8
2046.0 < 7.0.2046.569
Microsoft / Skype for Business Server Subscription Edition CU1
2046.0 < 7.0.2046.879