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TI-2019-01346 Aliases CVE-2019-1720GHSA-w82q-5jhx-c75p

Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability

Priority LOW 33CWE-20Published · Updated

Key facts

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

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

Summary

A vulnerability in the XML API of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a specifically crafted XML payload. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition until the system is manually rebooted. Software versions prior to X12.5.1 are affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01665 76th percentileScored 2026-11-07
Fix Fixed Cisco TelePresence Video Communication Server (VCS) (Cisco): X12.5.1

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 TelePresence Video Communication Server (VCS)before X12.5.1X12.5.1Patch availableCNA
  • Cisco TelePresence Video Communication Server (VCS) VendorCisco Affected before X12.5.1 Fixed in X12.5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:*before x12.5.1VulnerableCisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:* Versions before x12.5.1 Vulnerable ·Cisco

Remediation

  • Fix · CNA Cisco TelePresence Video Communication Server (VCS) (Cisco) Fixed in X12.5.1

Fixed in the same release

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

  • Release ·

    Cisco TelePresence Video Communication Server (VCS) X12.5.1

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-01347 Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service VulnerabilityPriority LOW 33
    • TI-2019-01348 Cisco Expressway Series and Cisco TelePresence Video Communication Server Cross-Site Request Forgery VulnerabilityPriority LOW 30
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1720
  2. 2026-10-03 Alias added: GHSA-w82q-5jhx-c75p

References

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-06915 Code injection in Cisco TelePresence Video Communication Server Expressway CVSS 3.1HIGH 7.2
  • TI-2019-01468 Improper input validation in Cisco TelePresence Video Communication Server CVSS 3.0HIGH 8.6
  • TI-2022-05314 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities CVSS 3.1CRITICAL 9.0
  • TI-2022-05313 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities CVSS 3.1CRITICAL 9.0
  • TI-2022-05371 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities CVSS 3.1CRITICAL 9.0
See all 41 →

Sources

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