Qt QtBase Module CVE-2019-18281 Denial of Service Vulnerability



Date Discovered

October 24, 2019


Qt QtBase module is prone to a denial-of-service vulnerability. An attacker can exploit this issue to cause the application to crash, denying service to legitimate users. Qt QtBase module version 5.11.x and 5.12.x prior to 5.12.5 are vulnerable.

Technologies Affected

  • Qt Qt Base 5.11.0
  • Qt Qt Base 5.11.1
  • Qt Qt Base 5.11.2
  • Qt Qt Base 5.12.0
  • Qt Qt Base 5.12.1
  • Qt Qt Base 5.12.2
  • Qt Qt Base 5.12.3
  • Qt Qt Base 5.12.4


Block external access at the network boundary, unless external parties require service.
If global access isn't needed, block access at the network perimeter to computers running the vulnerable application

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references for more information.



The vendor reported this issue.

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