Vulnerability · Published May 6, 2026 · Assigned by cisco
CVE-2026-20034Cisco Unity Connection Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity security flaw in Cisco Unity Connection from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Unity Connection | 12.5(1)12.5(1)SU112.5(1)SU212.5(1)SU312.5(1)SU41412.5(1)SU514SU1 |
Weakness: CWE-35 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H