What OpenWrt version do I have?

When I logon to OpenWrt with Luci I see the information: OpenWrt Barrier Breaker r39161 / LuCI Trunk (svn-r9945).
What version is this and where to find?
Is there a table with version vs release like Version 14.07and R47625?


"Barrier Breaker" corresponds to 14.07: https://openwrt.org/releases/14.07/notes-14.07

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Very old, unsupported, and vulnerable I must add. Upgrade it as soon as possible.


What does r39161 mean and where can I find information about is?



Do I need to upgrade if I only use the OpenWrt device as a repeater?
The main router/gateway in front of the repeater takes care of protection I think.

Yes, ALL devices (be it laptops, access points, phones, TV's, etc) that are connected to the internet should be kept up-to-date with the latest security patches. While your router is definitely the highest risk, since it faces the internet directly and takes care of the firewall duty, ALL devices connected to the internet can be compromised. And as soon as a hacker gains control of a device inside your network, that firewall running on your router is suddenly useless since they already have access inside your network.


there are wifi vulnerabilities like this https://www.theguardian.com/technology/2017/oct/16/wpa2-wifi-security-vulnerable-hacking-us-government-warns that would allow someone to bypass the wifi password and connect anyway to the wireless AP/repeater and get in your LAN.
It was fixed years ago in OpenWrt 18.06, but Barrier Breaker is older than that.

So even if that is just a repeater, it's better to update.

But as others said it's not a "front line" device like your main router so while it's not good, it's not that bad if you cannot update it (maybe it is a device that does not have enough flash/RAM to run newer OpenWrt so they dropped support for it).


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