CVE-2026-63523

6.1 mediumEPSS 0.6%

Medium (6.1) in microsoft. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-09-08
Modified: 2026-09-16
Record from: the NVD, synced 2026-10-19

Affected

microsoft:skype_for_business_server
microsoft:skype_for_business_server_subscription_edition

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63523

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