Using v6build1010 is controversial. It predates critical CVEs:
The keyword fgt vm64 kvmv6build1010fortinetoutkvmzip better captures a moment in networking history – a specific build, a specific hypervisor, and a universal desire for improvement. But true “better” doesn't come from a single zip file; it comes from: fgt vm64 kvmv6build1010fortinetoutkvmzip better
FortiGate VM64 KVM 6.0.10 (build 1010) is a mature, stable release of Fortinet's Next-Generation Firewall (NGFW) designed for Linux KVM environments. Released around September 2020, this build is part of the 6.0.x firmware branch Using v6build1010 is controversial
While 6.2.2 is an older, established build, it is significantly outdated compared to current stable branches like End of Engineering Support: Released around September 2020, this build is part of the 6
One-line description: Official FortiGate VM (64-bit) KVM image — version 6, build 1010 — packaged as a ZIP for KVM deployment.