High severity · published Nov 5, 2025
CVE-2025-20376
Cisco Unified Contact Center Express Remote Code Execution Vulnerability
7.2
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Unified Contact Center Express · Cisco
10.5(1)SU1; 10.6(1); 11.6(1); 10.6(1)SU1; 10.6(1)SU3; 11.6(2); +34 more · source: vendor
UC
Unified Contact Center Express · Cisco
before 12.5\(1\)_su03_es07; 15.0 · source: NVD
Affected product
CU
Cisco Unified Contact Center Express
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-20376
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-20376
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-mult-vuln-gK4TFXSn
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