TI-2020-03041 Aliases CVE-2020-3495 GHSA-fgm2-2fhw-x8fx

Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability

HIGH 77CWE-20Published 2020-09-04 · Updated 2024-11-13

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in Cisco Jabber for Windows could allow an authenticated, remote attacker to execute arbitrary code. The vulnerability is due to improper validation of message contents. An attacker could exploit this vulnerability by sending specially crafted Extensible Messaging and Presence Protocol (XMPP) messages to the affected software. A successful exploit could allow the attacker to cause the application to execute arbitrary programs on the targeted system with the privileges of the user account that is running the Cisco Jabber client software, possibly resulting in arbitrary code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.60537 99th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Jabber	all versions	—	No fix listed	CNA

Cisco Jabber VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:jabber::::::windows::*	12.1 to before 12.1.3; 12.5 to before 12.5.2; 12.6 to before 12.6.3; 12.7 to before 12.7.2; 12.8 to before 12.8.3; 12.9 to before 12.9.1	Vulnerable	Cisco

cpe:2.3:a:cisco:jabber:*:*:*:*:*:windows:*:* Versions 12.1 to before 12.1.3; 12.5 to before 12.5.2; 12.6 to before 12.6.3; 12.7 to before 12.7.2; 12.8 to before 12.8.3; 12.9 to before 12.9.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-3495
2026-10-03 Alias added: GHSA-fgm2-2fhw-x8fx

References

Advisory 1

20200902 Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability

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-2020-16496 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