ZLD4.33 WK35 Critical Security Patch

iSpeed · September 2019

I'm noting in the weekly updates https://support.zyxel.eu/hc/en-us/articles/360005438274-Weekly-Firmware-Support-Version-Lab-Version

It mentions apply due to critical security patch. I usually deploy only when general release versions arrive. Should we be following these interim patch releases?

Zyxel_Cooldia · September 2019

Hi @iSpeed

It have vulnerability patch in WK35, we recommended update to WK35.

The following link for your reference.

https://www.zyxel.com/support/web-CGI-vulnerability-of-gateways-and-access-point-controllers.shtml

USG_User · September 2022

I take for granted that we could update from WK25 to WK35 directy, leaving out step WK28, isn't it?

Zyxel_Stanley · September 2022

Hi @USG_User
It is an old artical since Sep 2019, and mentioned version is old. (ZLD4.33)
If you are asking upgrade firmware from 4.72WK25 to 4.72WK35. The answer is yes, you can ignore 4.72WK28.
Please backup startup-config file when operaing upgrading/downgrading firmware process.

ZLD4.33 WK35 Critical Security Patch

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