CVE-2021-1411: Cisco Jabber Desktop and Mobile Client Software Vulnerabilities

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-24 · updated 2026-06-17
Weakness: CWE-170

Description

Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system with elevated privileges, access sensitive information, intercept protected network traffic, or cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

Cisco Jabber: before 12.1.5; from 12.5.0 before 12.5.4; from 12.6.0 before 12.6.5; from 12.7.0 before 12.7.4; from 12.8.0 before 12.8.5; from 12.9.0 before 12.9.5 — fixed in 12.1.5, 12.5.4, 12.6.5, 12.7.4, 12.8.5, 12.9.5

How to fix

Upgrade to a fixed version: Cisco Jabber 12.1.5, 12.5.4, 12.6.5, 12.7.4. Check the vendor advisory for mitigations.

References

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