Cisco Unity Connection Remote Code Execution Vulnerability
Summary
| CVE | CVE-2026-20034 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-06 17:16:20 UTC |
| Updated | 2026-05-06 18:59:53 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-35 | CWE-35 Path Traversal: '.../...//'
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSSV3_1 | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1) | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU2 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU3 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU4 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU5 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14SU1 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU6 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14SU2 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU7 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14SU3 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU8 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14SU3a | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU8a | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 15 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 15SU1 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 14SU4 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 12.5(1)SU9 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 15SU2 | Not specified |
| CNA | Cisco | Cisco Unity Connection | affected 15SU3 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-... | [email protected] | sec.cloudapps.cisco.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
There are currently no legacy QID mappings associated with this CVE.