CVE-2026-20034CWE-35

Cisco Unity Connection Remote Code Execution Vulnerability

High · published May 6, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
53.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00712 · 53.1th percentile
Weakness
CWE-35 · Path Traversal: '.../...//'
Published
2026-05-06T16:16Z
EPSS history
Timeline
  • 06 MAY 16:16Z
    Cisco Unity Connection Remote Code Execution Vulnerability
    cvelistv5