CVE-2019-1720

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

MEDIUM
6.8
CVSS Score
Published: April 18, 2019 at 12:20 AM UTC
Updated: June 17, 2026 at 02:29 AM UTC
1 product affected across 1 vendorTelepresence Video Communication Server

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Severity
MEDIUM6.8
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < X12.5.1
Affected range stops below x12.5.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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