---
id: CVE-2025-20375
title: Cisco Unified Contact Center Express Arbitrary File Upload Vulnerability
summary: "A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files.\r\n\r\nThis vulnerability is due to an insufficient input validation associated to specific UI features. …"
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-434
vendor: Cisco
product: Cisco Unified Contact Center Express
affected:
  - unified_contact_center_express 10.5(1)SU1
  - unified_contact_center_express 10.6(1)
  - unified_contact_center_express 11.6(1)
  - unified_contact_center_express 10.6(1)SU1
  - unified_contact_center_express 10.6(1)SU3
  - unified_contact_center_express 11.6(2)
  - unified_contact_center_express 12.0(1)
  - unified_contact_center_express 11.0(1)SU1
  - unified_contact_center_express 11.5(1)SU1
  - unified_contact_center_express 10.5(1)
  - unified_contact_center_express 12.5(1)
  - unified_contact_center_express 12.5(1)SU1
  - unified_contact_center_express 12.5(1)SU2
  - unified_contact_center_express 12.5(1)SU3
  - unified_contact_center_express 12.5(1)_SU03_ES01
  - unified_contact_center_express 12.5(1)_SU03_ES02
  - unified_contact_center_express 12.5(1)_SU02_ES03
  - unified_contact_center_express 12.5(1)_SU02_ES04
  - unified_contact_center_express 12.5(1)_SU02_ES02
  - unified_contact_center_express 12.5(1)_SU01_ES02
  - unified_contact_center_express 12.5(1)_SU01_ES03
  - unified_contact_center_express 12.5(1)_SU02_ES01
  - unified_contact_center_express 11.6(2)ES07
  - unified_contact_center_express 11.6(2)ES08
  - unified_contact_center_express 12.5(1)_SU01_ES01
  - unified_contact_center_express 12.0(1)ES04
  - unified_contact_center_express 12.5(1)ES02
  - unified_contact_center_express 12.5(1)ES03
  - unified_contact_center_express 11.6(2)ES06
  - unified_contact_center_express 12.5(1)ES01
  - unified_contact_center_express 12.0(1)ES03
  - unified_contact_center_express 12.0(1)ES01
  - unified_contact_center_express 11.6(2)ES05
  - unified_contact_center_express 12.0(1)ES02
  - unified_contact_center_express 11.6(2)ES04
  - unified_contact_center_express 11.6(2)ES03
  - unified_contact_center_express 11.6(2)ES02
  - unified_contact_center_express 11.6(2)ES01
  - unified_contact_center_express 10.6(1)SU3ES03
  - unified_contact_center_express 11.0(1)SU1ES03
  - unified_contact_center_express 10.6(1)SU3ES01
  - unified_contact_center_express 10.5(1)SU1ES10
  - unified_contact_center_express 11.5(1)SU1ES03
  - unified_contact_center_express 11.6(1)ES02
  - unified_contact_center_express 11.5(1)ES01
  - unified_contact_center_express 10.6(1)SU2
  - unified_contact_center_express 10.6(1)SU2ES04
  - unified_contact_center_express 11.6(1)ES01
  - unified_contact_center_express 10.6(1)SU3ES02
  - unified_contact_center_express 11.5(1)SU1ES02
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-11-06T04:55:46.573406Z'
published: '2025-11-05'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:02:53.399Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-20375'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-mult-vuln-gK4TFXSn
    label: cisco-sa-cc-mult-vuln-gK4TFXSn
tags:
  - cve.org
epss: 0.00394
epssPercentile: 0.33745
ingestedAt: '2026-11-05T20:33:06.537Z'
---

## Overview

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 specific UI features. An attacker could exploit this vulnerability by uploading a crafted file to the web UI. A successful exploit could allow the attacker to upload arbitrary files to a vulnerable system and execute them, gaining access to the underlying operating system. To exploit this vulnerability, the attacker must have valid administrative credentials.

## Affected

- `unified_contact_center_express 10.5(1)SU1`
- `unified_contact_center_express 10.6(1)`
- `unified_contact_center_express 11.6(1)`
- `unified_contact_center_express 10.6(1)SU1`
- `unified_contact_center_express 10.6(1)SU3`
- `unified_contact_center_express 11.6(2)`
- `unified_contact_center_express 12.0(1)`
- `unified_contact_center_express 11.0(1)SU1`
- `unified_contact_center_express 11.5(1)SU1`
- `unified_contact_center_express 10.5(1)`
- `unified_contact_center_express 12.5(1)`
- `unified_contact_center_express 12.5(1)SU1`
- `unified_contact_center_express 12.5(1)SU2`
- `unified_contact_center_express 12.5(1)SU3`
- `unified_contact_center_express 12.5(1)_SU03_ES01`
- `unified_contact_center_express 12.5(1)_SU03_ES02`
- `unified_contact_center_express 12.5(1)_SU02_ES03`
- `unified_contact_center_express 12.5(1)_SU02_ES04`
- `unified_contact_center_express 12.5(1)_SU02_ES02`
- `unified_contact_center_express 12.5(1)_SU01_ES02`
- `unified_contact_center_express 12.5(1)_SU01_ES03`
- `unified_contact_center_express 12.5(1)_SU02_ES01`
- `unified_contact_center_express 11.6(2)ES07`
- `unified_contact_center_express 11.6(2)ES08`
- `unified_contact_center_express 12.5(1)_SU01_ES01`
- `unified_contact_center_express 12.0(1)ES04`
- `unified_contact_center_express 12.5(1)ES02`
- `unified_contact_center_express 12.5(1)ES03`
- `unified_contact_center_express 11.6(2)ES06`
- `unified_contact_center_express 12.5(1)ES01`
- `unified_contact_center_express 12.0(1)ES03`
- `unified_contact_center_express 12.0(1)ES01`
- `unified_contact_center_express 11.6(2)ES05`
- `unified_contact_center_express 12.0(1)ES02`
- `unified_contact_center_express 11.6(2)ES04`
- `unified_contact_center_express 11.6(2)ES03`
- `unified_contact_center_express 11.6(2)ES02`
- `unified_contact_center_express 11.6(2)ES01`
- `unified_contact_center_express 10.6(1)SU3ES03`
- `unified_contact_center_express 11.0(1)SU1ES03`
- `unified_contact_center_express 10.6(1)SU3ES01`
- `unified_contact_center_express 10.5(1)SU1ES10`
- `unified_contact_center_express 11.5(1)SU1ES03`
- `unified_contact_center_express 11.6(1)ES02`
- `unified_contact_center_express 11.5(1)ES01`
- `unified_contact_center_express 10.6(1)SU2`
- `unified_contact_center_express 10.6(1)SU2ES04`
- `unified_contact_center_express 11.6(1)ES01`
- `unified_contact_center_express 10.6(1)SU3ES02`
- `unified_contact_center_express 11.5(1)SU1ES02`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.