Threat Response Update:



On 17 december 2019 a vulnerability in Citrix Application Delivery Controller, formerly known as Netscaler, was disclosed. This vulnerability has CVE number CVE-2019-19781. Since the past weekend actual ways to exploit this CVE have been made public. This concerns a serious vulnerability that malicious actors can use to penetrate your network with all due consequences. Northwave has sent a Threat Response regarding these exploits yesterday. The Threat Response can be found at

Northwave has seen these exploits in active use to try to penetrate various organisations’ infrastructure. In several cases, the Northwave CERT has been activated to mitigate an attack.

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