Read the docs
TI-2020-03082 Aliases CVE-2020-3537GHSA-fg68-5m2x-55qr

Cisco Jabber for Windows Universal Naming Convention Link Handling Vulnerability

Priority LOW 28CWE-200Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

A vulnerability in Cisco Jabber for Windows 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 that contain Universal Naming Convention (UNC) links to a targeted user and convincing the user to follow the provided link. A successful exploit could allow the attacker to cause the application to access a remote system, possibly allowing the attacker to gain access to sensitive information that the attacker could use in additional attacks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01267 69th 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
Partial

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 · 1

CPEVersionsRoleVendor
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 12.9.1VulnerableCisco
  • 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

  1. 2026-10-02 Threatist record created from CVE-2020-3537
  2. 2026-10-03 Alias added: GHSA-fg68-5m2x-55qr

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-2020-16496 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