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TI-2020-16496 Aliases CVE-2020-27134GHSA-mwv5-m2cr-5r9v

Cisco Jabber Desktop and Mobile Client Software Vulnerabilities

Priority MEDIUM 46CWE-201Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-201.

Summary

Multiple vulnerabilities in Cisco Jabber for Windows, Jabber for MacOS, and Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system (OS) with elevated privileges or gain access to sensitive information. For more information about these vulnerabilities, see the Details section of this advisory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01667 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Jabberall versions—No fix listedCNA
  • Cisco Jabber VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:macos:*:*12.9(0)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:windows:*:*12.9(0)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:macos:*:*12.9(1)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:windows:*:*12.9(1)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(2\):*:*:*:*:macos:*:*12.9(2)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(2\):*:*:*:*:windows:*:*12.9(2)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(3\):*:*:*:*:macos:*:*12.9(3)VulnerableCisco
cpe:2.3:a:cisco:jabber:12.9\(3\):*:*:*:*:windows:*:*12.9(3)VulnerableCisco
cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(0\):*:*:*:*:*:*:*12.9(0)VulnerableCisco
cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(1\):*:*:*:*:*:*:*12.9(1)VulnerableCisco
  • cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:macos:*:* Versions 12.9(0) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(0\):*:*:*:*:windows:*:* Versions 12.9(0) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:macos:*:* Versions 12.9(1) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(1\):*:*:*:*:windows:*:* Versions 12.9(1) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(2\):*:*:*:*:macos:*:* Versions 12.9(2) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(2\):*:*:*:*:windows:*:* Versions 12.9(2) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(3\):*:*:*:*:macos:*:* Versions 12.9(3) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber:12.9\(3\):*:*:*:*:windows:*:* Versions 12.9(3) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(0\):*:*:*:*:*:*:* Versions 12.9(0) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(1\):*:*:*:*:*:*:* Versions 12.9(1) Vulnerable ·Cisco
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(2\):*:*:*:*:*:*:*12.9(2)VulnerableCisco
cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(3\):*:*:*:*:*:*:*12.9(3)VulnerableCisco
  • cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(2\):*:*:*:*:*:*:* Versions 12.9(2) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:jabber_for_mobile_platforms:12.9\(3\):*:*:*:*:*:*:* Versions 12.9(3) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Cisco Jabber — 20201210 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities

    4 records Highest priority Priority MEDIUM 4 MEDIUM

    Other records, highest priority first

    • TI-2020-16494 Cisco Jabber Desktop and Mobile Client Software VulnerabilitiesPriority MEDIUM 46
    • TI-2020-16489 Cisco Jabber Desktop and Mobile Client Software VulnerabilitiesPriority MEDIUM 46
    • TI-2020-16495 Cisco Jabber Desktop and Mobile Client Software VulnerabilitiesPriority MEDIUM 45
    Show all 4 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27134
  2. 2026-10-03 Alias added: GHSA-mwv5-m2cr-5r9v

References

Advisory 1

  • TI-2020-03041 Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2020-15937 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities CVSS 3.1CRITICAL 9.9
  • TI-2020-02979 Cisco Jabber for Windows Protocol Handler Command Injection Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-01198 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities CVSS 3.1CRITICAL 9.9
  • TI-2021-01138 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities CVSS 3.1CRITICAL 9.9
  • TI-2020-16494 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities CVSS 3.1CRITICAL 9.9
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences