https://www.bleepingcomputer.com/news/security/dutch-govt-suggests-turning-off-citrix-adc-devices-mitigations-may-fail/

Mitigation recommendations for CVE-2019-19781, a currently unpatched critical flaw affecting Citrix Application Delivery Controller (ADC) and Citrix Gateway, do not have the expected effect on all product versions.

In an updated advisory today, the software company informs that it found a new product that is vulnerable to the same security issue and that the advised actions do not work on some versions of Citrix ADC.