Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-20059

Severity CVSS v4.0:
Pending analysis
Type:
CWE-79 Cross-Site Scripting (XSS)
Publication date:
15/04/2026
Last modified:
28/04/2026

Description

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.<br /> <br /> 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x
6.10
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:* 12.5 (including)
cpe:2.3:a:cisco:unity_connection:14.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su3a:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:14su5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:15.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:15su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:15su2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:15su3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools