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TI-2025-14439 Aliases CVE-2025-20139GHSA-rx2w-x63r-4r67

A vulnerability in chat messaging features of Cisco Enterprise Chat and Email (ECE) could…

Priority MEDIUM 40CWE-185Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in chat messaging features of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input to chat entry points. An attacker could exploit this vulnerability by sending malicious requests to a messaging chat entry point in the affected application. A successful exploit could allow the attacker to cause the application to stop responding, resulting in a DoS condition. The application may not recover on its own and may need an administrator to manually restart services to recover.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00666 52nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Enterprise Chat and Email11.5(1); 11.6(1); 11.6(1)_ES2; 11.6(1)_ES3; 11.6(1)_ES4; 11.6(1)_ES5; 11.6(1)_ES6; 11.6(1)_ES10; 11.6(1)_ES11; 11.6(1)_ES7; 11.6(1)_ES8; 11.6(1)_ES9; 11.6(1)_ES9a; 11.6(1)_ES12; 11.6(1)_ES12_ET1; 12.0(1); 12.0(1)_ES1; 12.0(1)_ES2; 12.0(1)_ES3; 12.0(1)_ES4; 12.0(1)_ES5; 12.0(1)_ES5a; 12.0(1)_ES6; 12.0(1)_ES6_ET1; 12.0(1)_ES6_ET2; 12.0(1)_ES6_ET3; 12.0(1)_ES7; 12.0(1)_ES7_ET1; 12.5(1); 12.5(1)_ES1; 12.5(1)_ES2; 12.5(1)_ES3; 12.5(1)_ES3_ET1; 12.5(1)_ET1; 12.5(1)_ES4; 12.5(1)_ES3_ET2; 12.5(1)_ES4_ET1; 12.5(1)_ES5; 12.5(1)_ES5_ET1; 12.5(1)_ES6; 12.5(1)_ES7; 12.5(1)_ES8; 12.5(1)_ES8_ET1; 12.5(1)_ES3_ET3; 12.5(1)_ES5_ET2; 12.5(1)_ES6_ET1; 12.5(1)_ES4_ET2; 12.5(1)_ES7_ET1; 12.5(1)_ES9; 12.6(1); 12.6(1)_ET1; 12.6(1)_ET2; 12.6(1)_ES1; 12.6(1)_ET3; 12.6(1)_ES1_ET1; 12.6(1)_ES2; 12.6(1)_ES3; 12.6(1)_ES4; 12.6(1)_ES4_ET1; 12.6(1)_ES5; 12.6(1)_ES5_ET1; 12.6(1)_ES5_ET2; 12.6(1)_ES6; 12.6(1)_ES6_ET1; 12.6(1)_ES6_ET2; 12.6(1)_ES7; 12.6(1)_ES8; 12.6(1)_ES4_ET2; 12.6(1)_ES3_ET3; 12.6(1)_ES2_ET5; 12.6(1)_ES1_ET2; 12.6(1)_ES8_ET1; 12.6(1)_ES7_ET1; 12.6(1)_ES6_ET3; 12.6(1)_ES5_ET3; 12.6(1)_ES8_ET2; 12.6(1)_ES9; 12.6(1)_ES9_ET1; 12.6(1)_ES9_ET2; 12.6(1)_ES9_ET3; 12.6_ES2_ET1; 12.6_ES2_ET2; 12.6_ES2_ET3; 12.6_ES2_ET4; 12.6_ES3_ET1; 12.6_ES3_ET2—No fix listedCNA
  • Cisco Enterprise Chat and Email VendorCisco Affected 11.5(1); 11.6(1); 11.6(1)_ES2; 11.6(1)_ES3; 11.6(1)_ES4; 11.6(1)_ES5; 11.6(1)_ES6; 11.6(1)_ES10; 11.6(1)_ES11; 11.6(1)_ES7; 11.6(1)_ES8; 11.6(1)_ES9; 11.6(1)_ES9a; 11.6(1)_ES12; 11.6(1)_ES12_ET1; 12.0(1); 12.0(1)_ES1; 12.0(1)_ES2; 12.0(1)_ES3; 12.0(1)_ES4; 12.0(1)_ES5; 12.0(1)_ES5a; 12.0(1)_ES6; 12.0(1)_ES6_ET1; 12.0(1)_ES6_ET2; 12.0(1)_ES6_ET3; 12.0(1)_ES7; 12.0(1)_ES7_ET1; 12.5(1); 12.5(1)_ES1; 12.5(1)_ES2; 12.5(1)_ES3; 12.5(1)_ES3_ET1; 12.5(1)_ET1; 12.5(1)_ES4; 12.5(1)_ES3_ET2; 12.5(1)_ES4_ET1; 12.5(1)_ES5; 12.5(1)_ES5_ET1; 12.5(1)_ES6; 12.5(1)_ES7; 12.5(1)_ES8; 12.5(1)_ES8_ET1; 12.5(1)_ES3_ET3; 12.5(1)_ES5_ET2; 12.5(1)_ES6_ET1; 12.5(1)_ES4_ET2; 12.5(1)_ES7_ET1; 12.5(1)_ES9; 12.6(1); 12.6(1)_ET1; 12.6(1)_ET2; 12.6(1)_ES1; 12.6(1)_ET3; 12.6(1)_ES1_ET1; 12.6(1)_ES2; 12.6(1)_ES3; 12.6(1)_ES4; 12.6(1)_ES4_ET1; 12.6(1)_ES5; 12.6(1)_ES5_ET1; 12.6(1)_ES5_ET2; 12.6(1)_ES6; 12.6(1)_ES6_ET1; 12.6(1)_ES6_ET2; 12.6(1)_ES7; 12.6(1)_ES8; 12.6(1)_ES4_ET2; 12.6(1)_ES3_ET3; 12.6(1)_ES2_ET5; 12.6(1)_ES1_ET2; 12.6(1)_ES8_ET1; 12.6(1)_ES7_ET1; 12.6(1)_ES6_ET3; 12.6(1)_ES5_ET3; 12.6(1)_ES8_ET2; 12.6(1)_ES9; 12.6(1)_ES9_ET1; 12.6(1)_ES9_ET2; 12.6(1)_ES9_ET3; 12.6_ES2_ET1; 12.6_ES2_ET2; 12.6_ES2_ET3; 12.6_ES2_ET4; 12.6_ES3_ET1; 12.6_ES3_ET2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:enterprise_chat_and_email:*:*:*:*:*:*:*:*before 12.6\(1\)es10VulnerableCisco
  • cpe:2.3:a:cisco:enterprise_chat_and_email:*:*:*:*:*:*:*:* Versions before 12.6\(1\)es10 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-20139
  2. 2026-10-03 Alias added: GHSA-rx2w-x63r-4r67
  3. 2026-10-14 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-13408 Cisco Enterprise Chat and Email Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2019-01499 Cisco Enterprise Chat and Email Attachment Download Vulnerability CVSS 3.1MEDIUM 6.5
  • TI-2022-05192 Cisco Enterprise Chat and Email Username Enumeration Vulnerability CVSS 3.1MEDIUM 5.3
  • TI-2019-01492 Cisco Enterprise Chat and Email Cross-Site Scripting Vulnerability CVSS 3.0MEDIUM 6.1
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences