Given that the web server on an ICS runs as the limited nr user, both the Ivanti and the Mandiant advisory are missing any indication whatsoever how the threat actors are gaining root privileges.
I've reported 4 different ICS LPEs to Ivanti recently, but none of them have been fixed yet.
Back in the CVE-2025-0282 days, Ivanti made up a CVE-2025-0283 CVE to capture the LPE aspect of attacks happening in the wild. I say "made up" because I've seen no evidence whatsoever that any LPE was fixed between 22.7R2.5 and 22.7R2.6.
Knowing what's going on in an ICS device is a huge blind spot, but apparently seeing how attackers are LPE'ing is even blind-er.