CVE-2026-20059

A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

• cisco unity connection (<= 12.5) • cisco unity connection 14.0 • cisco unity connection 14su1 • cisco unity connection 14su2 • cisco unity connection 14su3 • cisco unity connection 14su3a • cisco unity connection 14su4 • cisco unity connection 14su5 • cisco unity connection 15.0 • cisco unity connection 15su1 • cisco unity connection 15su2 • cisco unity connection 15su3