CVE-2026-20034

A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device. To exploit this vulnerability, the attacker must have valid user credentials on the affected device.

Score

CVSS 3.1 8.8 High

Status

Analyzed - psirt@cisco.com

Published

2026-05-06

Last modified

2026-10-26

Weaknesses

CWE-35

Affected products

• Cisco Unity Connection (Cisco)
• Unity Connection (Cisco)

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-rce-ssrf-hENhuASy