What is CVE-2025-20139?

CVE-2025-20139 is a high-severity vulnerability in Cisco Enterprise Chat And Email, classified under Incorrect Regular Expression. CVSS score: 7.5/10. Published 2025-04-02.

How severe is CVE-2025-20139?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cisco Enterprise Chat And Email

CVE-2025-20139

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-s…

EPSS: 0.007 (71.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Enterprise Chat And Email — versions 11.5(1), 11.6(1), 11.6(1)_ES2

Weakness classification (CWE)

CWE-185 — Incorrect Regular Expression

References

cisco-sa-ece-dos-tC6m9GZ8

Frequently asked questions

What is CVE-2025-20139?: CVE-2025-20139 is a high-severity vulnerability in Cisco Enterprise Chat And Email, classified under Incorrect Regular Expression. CVSS score: 7.5/10. Published 2025-04-02.
How severe is CVE-2025-20139?: High severity. CVSS v3 base score is 7.5 out of 10.