SB2026050724 - Multiple vulnerabilities in Cisco Unity Connection

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Main Vulnerability Database SB2026050724

SB2026050724 - Multiple vulnerabilities in Cisco Unity Connection

Published: May 7, 2026

Security Bulletin ID SB2026050724
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Path traversal (CVE-ID: CVE-2026-20034)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the web-based management interface. A remote user can send a specially crafted API request and upload arbitrary files on the system, leading to arbitrary code execution.


2) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-20035)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the web UI. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.


Remediation

Install update from vendor's website.

References