What is CVE-2026-20172?

CVE-2026-20172 is a medium-severity vulnerability in Cisco Enterprise Chat And Email, classified under CWE-646. CVSS score: 4.3/10. Published 2026-05-06.

How severe is CVE-2026-20172?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Cisco Enterprise Chat And Email

CVE-2026-20172

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…

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Cisco Enterprise Chat And Email — versions 11.6(1)_ES3, 11.6(1)_ES4, 12.0(1)_ES6

Weakness classification (CWE)

CWE-646

References

cisco-sa-ece-lite-agent-BCgSN8eb

Frequently asked questions

What is CVE-2026-20172?: CVE-2026-20172 is a medium-severity vulnerability in Cisco Enterprise Chat And Email, classified under CWE-646. CVSS score: 4.3/10. Published 2026-05-06.
How severe is CVE-2026-20172?: Medium severity. CVSS v3 base score is 4.3 out of 10.