CVE-2020-3498: Cisco Jabber

Medium severity, CVSS 6.5. EPSS: 1.6% chance of exploitation in the next 30 days.

A vulnerability in Cisco Jabber software could allow an authenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted messages to a targeted system. A successful exploit could allow the attacker to cause the application to return sensitive authentication information to another system, possibly for use in further attacks.

Affected products

• Cisco Jabber: from 12.1, before 12.1.3 (fixed in 12.1.3); from 12.5, before 12.5.2 (fixed in 12.5.2); from 12.6, before 12.6.3 (fixed in 12.6.3); from 12.7, before 12.7.2 (fixed in 12.7.2); from 12.8, before 12.8.3 (fixed in 12.8.3); from 12.9, before 12.9.1 (fixed in 12.9.1)

Published 2020-09-04. Last modified 2026-06-17.