CVE-2026-20035: Cisco Unity Connection

High severity, CVSS 7.2. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device.

Affected products

• Cisco Unity Connection: before 14.0 (fixed in 14.0); version 14.0 only; version 14su1 only; version 14su2 only; version 14su3 only; version 14su4 only; …

Published 2026-05-06. Last modified 2026-07-08.