What’s Vulnerable › Vulnerabilities
CVE-2025-20139
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-04-02 · updated 2026-06-17
- Weakness: CWE-185
Description
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.
Affected products
- Cisco Enterprise Chat and Email: before 12.6\(1\)es10 — fixed in 12.6\(1\)es10
How to fix
Upgrade to a fixed version: Cisco Enterprise Chat and Email 12.6\(1\)es10. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2025-20139 or the next vulnerability affects your stack