XSS in Cisco Packaged Contact Center Enterprise
CVE-2026-20109
Multiple vulnerabilities in the web-based management interface of Cisco Packaged Contact Center Enterprise (Packaged CCE) and Cisco Unified Contact Center Enterprise (Unified CCE) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. These vulnerabilities exist because the web-based management interface does not properly validate user-supplied input. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker must have valid administrative credentials.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Cisco Packaged Contact Center Enterprise — versions 12.5(1), 11.0(1), 12.0(1)
- Cisco Unified Contact Center Enterprise — versions 12.6(1)ES3, 12.6(1)ES1, 12.6(1)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20109?
- CVE-2026-20109 is a medium-severity vulnerability in Cisco Packaged Contact Center Enterprise, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-01-21.
- How severe is CVE-2026-20109?
- Medium severity. CVSS v3 base score is 4.8 out of 10.