CVS
This signature detects CVS, which is a version control system. It maintains a central repository that stores files (often source code). Developers can use CVS to check out a working directory from the repository, to check in new versions of files to the repository, and other operations.
Available to all SRX running 12.3X48+
Available to all MX running 20.2R1+
Available to all vSRX running 20.3R1+