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In firmware release 34.0, on the 9th May 2025, Zyxel fixed the security flaw that allowed an admin/user to enable the debug flag and retrieve the root password.
If anyone knows a new method of privilege escalation on this device, I'd be grateful if you would reach out to me.
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[-]Zyxel EX5601/T0 has patched[/-][+]Zyxel EX5601/T0 patches security flaw[/+]simonebortolin commentedon Dec 2, 2025
There are a lot of modes here: https://forum.openwrt.org/t/adding-openwrt-support-for-zyxel-ex5601-t0/155914/1003?page=36
Resolve issues #428, #424, #416: FG1000B firmware, Galachip, Zyxel patch
Resolve issues #428, #424, #416: FG1000B firmware, Galachip, Zyxel patch