CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability
Description
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.
Weakness: CWE-35
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Unity Connection | Other Products | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Unity Connection
Vendor advisory
cisco-sa-unity-rce-ssrf-hENhuASy
Cisco Unity Connection Remote Code Execution and Server-Side Request Forgery Vulnerabilities
Cisco’s rating: High (advisory CVSS 8.8) · Published May 6, 2026
Bug IDs: CSCwq36774 , CSCwq36834
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from