Cisco Enterprise Chat and Email Lite Agent File Upload Vulnerability
Summary
| CVE | CVE-2026-20172 |
|---|---|
| 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 Lite Agent feature of Cisco Enterprise Chat and Email (ECE) could allow an authenticated, remote attacker to conduct browser-based attacks. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of Agent. This vulnerability is due to inadequate validation of file contents during file upload operations. An attacker could exploit this vulnerability by uploading a file that contains malicious scripts or HTML code, which the application could make available to other users to access. A successful exploit could allow the attacker to execute the contents of that file in the browser of a user and conduct browser-based attacks. |
Risk And Classification
Primary CVSS: v3.1 4.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Problem Types: CWE-646 | CWE-646 Reliance on File Name or Extension of Externally-Supplied File
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | CVSSV3_1 | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES4 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES6 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES8 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES5a | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES9 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES6_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES6 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES5 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES3_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES11 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES4 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES5 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES9a | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES10 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.5(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES7 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES3_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES6_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES4 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES12 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES4_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES6_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES1_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES2_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES5 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES2_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES7 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES2_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.0(1)_ES7_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES5_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES2_ET4 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 11.6(1)_ES12_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES3_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES6 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6_ES3_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES4 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES7 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES4_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES5 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES5_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES5_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES6 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES6_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES8 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES6_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES7 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES8 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES4_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES3_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES2_ET5 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES1_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES8_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES7_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES6_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES5_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES8_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES3_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES5_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES6_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES4_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES7_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES8_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES9 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES9_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES9 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES9_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES9_ET3 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES10 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES10_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 15.0(1) | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES11 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 15.0(1)_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 15.0(1)ES202508 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES11_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES11_ET2 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES12 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 15.0(1)ES202511 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.6(1)_ES12_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 15.0(1)ES202511_ET1 | Not specified |
| CNA | Cisco | Cisco Enterprise Chat And Email | affected 12.5(1)_ES10 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ece-li... | [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 vulnerability that is described in this advisory.
There are currently no legacy QID mappings associated with this CVE.