Vulnerability Intelligence Report
Cisco Unity Connection Remote Code Execution Vulnerability
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.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:0.70%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-35 ↗Path Traversal: '.../...//'
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Cisco | Cisco Unity Connection | 12.5(1) (affected), 12.5(1)SU1 (affected), 12.5(1)SU2 (affected), 12.5(1)SU3 (affected), 12.5(1)SU4 (affected), 14 (affected), 12.5(1)SU5 (affected), 14SU1 (affected), 12.5(1)SU6 (affected), 14SU2 (affected), 12.5(1)SU7 (affected), 14SU3 (affected), 12.5(1)SU8 (affected), 14SU3a (affected), 12.5(1)SU8a (affected), 15 (affected), 15SU1 (affected), 14SU4 (affected), 12.5(1)SU9 (affected), 15SU2 (affected), 15SU3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.696%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2025-10-08T11:59:15 |
| Published | 2026-05-06T16:16:05 |
| Last Updated | 2026-05-07T03:55:48 |
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