Just to clarify one thing: R82 doesn’t have JHF 120 yet.
Right now, R82 is on JHF 60, while R81.20 is the one with JHF 120.
From what I’ve researched, this looks more like a Unix 32-bit timestamp limitation than a Check Point–specific issue. Other systems have hit the same problem and usually solve it by moving to 64-bit timestamps, but I couldn’t find any clear Check Point documentation (I couldn’t find any mention of a solution for this issue in the R81.10, R81.20, or R82 release notes yet.) saying this is already fully implemented or fixed everywhere.
I did find SK158096 that have a good answer for this year 2038 bug:
https://support.checkpoint.com/results/sk/sk158096 – How to renew an Internal Certificate Authority (ICA) certificate
It mentions that the ICA certificate is valid for 20 years and includes a note about the Year 2038 issue:
"The expiration date of the renewed ICA certificate is restricted to the year 2038.
This is caused by the Year 2038 Problem. Check Point plans to include a fix in an upcoming major release."
Since this SK was last updated in 2025-03-27, it looks like Check Point is already aware of the 2038 issue and has a fix planned on the roadmap.