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TI-2019-01302 Aliases CVE-2019-1676GHSA-hpfq-w7vm-jxqp

Cisco Meeting Server SIP Processing Denial of Service Vulnerability

Priority LOW 36CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

A vulnerability in the Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Cisco Meeting Server. The vulnerability is due to insufficient validation of Session Description Protocol (SDP) messages. An attacker could exploit this vulnerability by sending a crafted SDP message to the CMS call bridge. An exploit could allow the attacker to cause the CMS to reload, causing a DoS condition for all connected clients. Versions prior to 2.3.9 are affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0182 78th percentileScored 2026-11-07
Fix Fixed Cisco Meeting Server (Cisco): 2.3.9

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 Meeting Serverbefore 2.3.92.3.9Patch availableCNA
  • Cisco Meeting Server VendorCisco Affected before 2.3.9 Fixed in 2.3.9 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*2.3.0 to before 2.3.9VulnerableCisco
  • cpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:* Versions 2.3.0 to before 2.3.9 Vulnerable ·Cisco

Remediation

  • Fix · CNA Cisco Meeting Server (Cisco) Fixed in 2.3.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1676
  2. 2026-10-03 Alias added: GHSA-hpfq-w7vm-jxqp

References

Advisory 1

  • TI-2016-05530 Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5 CVSS 3.0CRITICAL 9.8
  • TI-2016-05529 Memory corruption in Cisco Meeting Server before 2.0.1, Acano Server before 1.9.3, Cisco… CVSS 3.0CRITICAL 9.8
  • TI-2018-00239 Improper input validation in Cisco Meeting Server Media Services CVSS 3.0HIGH 7.5
  • TI-2017-09025 Exposure of resource to wrong sphere in Cisco Meeting Server CVSS 3.0CRITICAL 9.1
  • TI-2018-00222 A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker… CVSS 3.0HIGH 8.1
  • TI-2016-05527 Improper input validation in Cisco Meeting Server before 2.0.6 and Acano Server before… CVSS 3.0CRITICAL 9.1
See all 30 →

Sources

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