Cisco Unified Contact Center Express Remote Code Execution Vulnerability
Summary
| CVE | CVE-2025-20376 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-11-05 17:15:38 UTC |
| Updated | 2026-06-17 08:41:38 UTC |
| Description | A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files. This vulnerability is due to an insufficient input validation associated to file upload mechanisms. An attacker could exploit this vulnerability by uploading a malicious file to the web UI and executing it. A successful exploit could allow the attacker to execute arbitrary commands on the underlying system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials. |
Risk And Classification
Primary CVSS: v3.1 7.2 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.004780000 probability, percentile 0.398490000 (date 2026-10-18)
Problem Types: CWE-434 | CWE-434 Unrestricted Upload of File with Dangerous Type
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | CNA | CVSSV3_1 | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
HighUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Cisco | Unified Contact Center Express | All | All | All | All |
| Application | Cisco | Unified Contact Center Express | 15.0 | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.5(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(1) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU3 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.0(1) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.0(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.5(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.5(1) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1) | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)SU1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)SU2 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)SU3 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU02_ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU02_ES04 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU02_ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU01_ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU01_ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU02_ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES07 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES08 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU01_ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.0(1)ES04 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES06 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.0(1)ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.0(1)ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES05 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.0(1)ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES04 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(2)ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU3ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.0(1)SU1ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU3ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.5(1)SU1ES10 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.5(1)SU1ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(1)ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.5(1)ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU2 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU2ES04 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.6(1)ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 10.6(1)SU3ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.5(1)SU1ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.5(1)SU1ES01 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 11.0(1)SU1ES02 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES03 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES04 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES05 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected UCCX 15.0.1 | Not specified |
| CNA | Cisco | Cisco Unified Contact Center Express | affected 12.5(1)_SU03_ES06 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-mul... | [email protected] | sec.cloudapps.cisco.com | Vendor Advisory |
| 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.