Home › OpenWrt › 25.12.4

OpenWrt 25.12.4 – safe to update?

Newer release in this line: OpenWrt 25.12.6 (2026-10-18). If you're updating now, check that one instead — it may already fix the issues reported here.

Security update: this release fixes security issues (highest CVSS 8.8). Waiting carries its own risk — if your device is exposed, weigh that against the reports below.

What's in this release

CVEs fixed

• CVE-2026-43284 HIGH 8.8 (named in release notes)
  In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter…
• CVE-2026-2291 HIGH 7.3 (named in release notes)
  dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.
• CVE-2026-4890 (named in release notes)
• CVE-2026-4891 (named in release notes)
• CVE-2026-4892 (named in release notes)
• CVE-2026-4893 (named in release notes)
• CVE-2026-5172 (named in release notes)

Community reports

• Problem Flint2 25.12.4 Firewall traffic rules don't always work · Reddit · 2026-06-08

  Unsure why my Traffic Rule isn't working consistently. This goal is to have an IP set (kids devices) which can black access to the net when enabled. For some reason the rule doesn't work predictably, when it works logs show the system warning, but it seems to pick and choose whe…

• Problem Upgrading WRT1900AC from OpenWrt Chaos Calmer 15.05-rc3 to 25.12.4 · Reddit · 2026-05-25

  I found an old WRT1900AC ([1]) in my closet. It has OpenWRT 15.05-rc3 (what I can see from LuCI) on it. I tried upgrading the firmware to 25.12.4, but it doesn't seem to apply correctly to the "other" partition. The "other" partition doesn't boot up and the power button just kee…

• Mention [Success] ive done it for absolutely free · Reddit · 2026-09-03

  Hi r/openwrt i know I am new in here but I want to tell yall for my successful kinda DIY router I've made with just an old pc that I've got for free HP Compaq Elite 8200 SFF with the tplink TL-WN722Nv1 also free and the rtl8821ce that I've taken out from my old laptop and a seco…

• Mention Way to disable wifi if lan4 is disconnected? · Reddit · 2026-07-08

  Is there a way to disable the 5Ghz wifi (phy1-ap0) if the lan4 port cable is disconnected and then reenable it if the link is back up? A 10sec delay might be useful too. So in effect the status of lan4 is a toggle for phy1-ap0. Cudy wr1300 v4, 25.12.4 root@OpenWrt:~# ip address…

• Mention Modern UI / Theme system: I Love LuCI · Reddit · 2026-06-20

  Hello, I have been using OpenWRT for over 20 years now, and I have felt that its UI is lacking. While we can accomplish anything using uci, I generally prefer the web interface for quickly adjusting settings, etc. To make it a bit easier on the eyes, I have (worked with AI and)…

• Mention Guest Wifi questions - IPv6 weirdness and the need for VLAN? · Reddit · 2026-06-18

  Hello Folks, so I've configured a guest wifi network on my router (OpenWrt 25.12.4) based on https://openwrt.org/docs/guide-user/network/wifi/guestwifi/configuration_webinterface What is clear that the article doesn't mention any VLAN configuration, therefore my question is whet…

• Mention What is wrong with my Flint 2? Bad latency issues · Reddit · 2026-06-08

  My Nighthawk 7800 went EoL so I replaced it with a Flint 2 (MT6000) (OpenWrt 25.12.4). After replacing it, I observed issues with network with web pages struggling to load and streaming video would stop and I was get the rotating circle that shows it is loading. I did some basic…

• Mention Issue with attended sysupgrade · Reddit · 2026-06-01

  I had installed version 25.12.1 on my archer C6 v2 router (EU version), and used attended sysupgrade to upgrade to version 25.12.4. The router has rebooted since, internet is available through ethernet and wifi, i am able to reach other devices in the network, however the router…

• Mention Banana Pi R4 Lite with BE14 NIC: great WiFi LAN speeds, but slow WiFi WAN speeds · Reddit · 2026-05-31

  Basically what the title says. Just got myself a Banana Pi R4 Lite with WiFi 7 BE14 NIC and after fiddling around with it I got it to work just fine with latest OpenWRT 25.12.4, but one issue that kills all of joy of this (presumably) great hardware: when I do iperf (or Librespe…

• Mention Per Packet Overhead in SQM · Reddit · 2026-05-30

  Router 3200ACM OpenWrt 25.12.4 BSNL ISP SQM QOS Purpose - Gaming. Lowest Latency possible. Per Packet Overhead in SQM. I use an ISP BSNL FTTH PPOE connection and there is a vlan option in it. What is the correct value for the Per Packet OVerhead?

• Mention Issues with IOT VLAN on 2.4 Ghz band · Reddit · 2026-05-24

  UPDATE: Temporarily disabling fast roaming on my other SSIDs seems to have allowed me to connect and set up all my IOT devices. Enabling FT doesn't seem to have kicked anything off either I'm having issues with my 2.4 Ghz IOT network. My setup is 2 routers (Linksys MX5300 on 25.…

• Mention Netgear R7900 - what did I do wrong? · Reddit · 2026-05-17

  UPDATE : I used nmrpflash to recover/reinstall the original Netgear Firmware, and then I successfully installed FreshTomato. Noob here - this is my first time attempting to install non-oem firmware onto a router. My goal was to load firmware that would have more up-to-date secur…

Reports are found automatically and labelled by an AI model plus keyword rules — they can be wrong. Open the post to judge for yourself.

← OpenWrt 25.12.3 · OpenWrt 25.12.5 →

Other OpenWrt versions

• 25.12.6 2026-10-18
• 24.10.8 2026-07-26
• 25.12.5 2026-07-01
• 24.10.7 2026-05-31
• 25.12.4 2026-05-14
• 25.12.3 2026-05-07
• 25.12.2 2026-03-27
• 25.12.1 2026-03-18