system
Identify the affected product in <CVE-2020-1916>.
user
Which product is affected by <CVE-2020-1916>?
assistant
The affected product is HHVM and version: 4.83.1, 4.83.0, 4.82.1, 4.82.0, 4.81.1, 4.81.0, 4.80.1, 4.80.0, 4.79.1, 4.79.0, 4.78.1, 4.57.0, 4.56.2, unspecified.