CVE-2026-20059: medium-severity vulnerability in Cisco Unity Connection
Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.1epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
Cisco · Cisco Unity ConnectionRelated CVEs — Cisco Unity Connection
In the same product, most dangerous first.
CVE-2026-20045HIGHCisco Unified Communications Products Remote Code Execution VulnerabilityEPSS 4.5%KEVCVE-2021-1362HIGHCisco Unified Communications Products Remote Code Execution VulnerabilityEPSS 2.8%CVE-2024-20253CRITICALCVE-2024-20253EPSS 2.4%CVE-2018-15396—Cisco Unity Connection File Upload Denial of Service VulnerabilityEPSS 1.8%CVE-2020-3130MEDIUMCisco Unity Connection Directory Traversal VulnerabilityEPSS 1.8%CVE-2024-20272HIGHCVE-2024-20272EPSS 1.6%