PT-2026-33081 · Cisco · Cisco Unity Connection

Jahmel Harris · Published 2026-04-15 · Updated 2026-04-16 · CVE-2026-20059

Positive Technologies (AI Summary)

CVSS v2.0

6.4

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions Cisco Unity Connection (affected versions not specified)

Description A flaw in the web-based management interface allows an unauthenticated remote attacker to perform a reflected Cross-Site Scripting (XSS) attack. This occurs because the interface fails to properly validate user-supplied input. An attacker can exploit this by tricking a user into clicking a specially crafted link, which may lead to the execution of arbitrary script code within the interface context or the theft of sensitive browser-based information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BDU:2026-05642

CVE-2026-20059

Affected Products

Cisco Unity Connection

References · 4

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-vulns-n2EJSbbw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20059 · Security Note
• https://bdu.fstec.ru/vul/2026-05642 · Security Note
• https://twitter.com/CVEnew/status/2044737954216571167 · Twitter Post