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CVE-2021-1570: Cisco Jabber Desktop and Mobile Client Software Vulnerabilities

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-16 · updated 2026-06-17
• Weakness: CWE-399

Description

Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for Mac, and Cisco Jabber for mobile platforms could allow an attacker to access sensitive information 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: from 12.9 before 12.9.6.55898; from 14.0 before 14.0.1.55914 — fixed in 12.9.6.55898, 14.0.1.55914

How to fix

Upgrade to a fixed version: Cisco Jabber 12.9.6.55898, 14.0.1.55914. Check the vendor advisory for mitigations.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-GuC5mLwG
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-GuC5mLwG

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