OpenWrt 25.12.5 - Service Release - 1. July 2026

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 25.12.5, r33051-f5dae5ece4 Dave's Guitar
 -----------------------------------------------------

The OpenWrt community is proud to announce the newest stable release of the OpenWrt 25.12 stable series.

Download firmware images via the Firmware Selector or directly from our download servers:

• Download firmware image for your device (Firmware Selector)
• Download firmware images directly from OpenWrt download servers

An upgrade from OpenWrt 24.10 to OpenWrt 25.12 is supported in many cases with the help of the sysupgrade utility, which will also attempt to preserve the configuration. A configuration backup is advised nonetheless when upgrading to OpenWrt 25.12 (see “Upgrading” below).

The OpenWrt Project is a Linux operating system targeting embedded devices. It is a complete replacement for the vendor-supplied firmware of a wide range of wireless routers and non-network devices. See the Table of Hardware for supported devices. For more information about OpenWrt project organization, see the About OpenWrt pages.

Do you want to be informed about important changes such as new releases and security fixes?

We have a new mailing list for this, as well as RSS options: see Important changes and announcements.

Only the main changes are listed below. See changelog-25.12.5 for the full changelog.

This release fixes several remotely triggerable vulnerabilities in core network services that are enabled by default. Updating is strongly recommended.

• odhcpd (DHCPv6/DHCPv4/RA server, enabled by default): multiple vulnerabilities reachable by a network-adjacent attacker were fixed by updating odhcpd:
  • CVE-2026-53921 (Critical): stack buffer overflow in the DHCPv6 IA reply serialization, triggerable with crafted DHCPv6 REQUEST packets. GHSA-7fwx-hhrg-3496
  • CVE-2026-53918 (High): use-after-free in the DHCPv6 IA handler. GHSA-44ff-jcwh-wgc2
  • CVE-2026-53920 (High): stack memory disclosure via a truncated DHCPv6 IA_NA/IA_PD option. GHSA-p769-5v73-pc4f
  • CVE-2026-53922 (Moderate): pre-auth denial of service via a size_t underflow in DHCPv6 IA handling. GHSA-7hcw-g2jh-pqv5
  • CVE-2026-55606 (Moderate): stack buffer overread caused by a DUID length endianness mismatch. GHSA-x8x4-7gvf-gp45
  • No CVE assigned (Moderate, CVSS 5.4): the NDP relay accepted IPv6 Neighbor Solicitations with a hop limit other than 255 (RFC 4861 violation), letting an off-link attacker spoof NS packets through the relay (neighbor-cache poisoning, traffic redirection or DoS). Only relevant when the NDP relay is enabled. GHSA-qvg7-9jf5-wgjc
• odhcpd / LuCI stored XSS (Critical): an unauthenticated DHCPv6 client could inject lease-file lines through a crafted FQDN hostname, resulting in stored cross-site scripting on the LuCI DHCPv6 leases status page. Fixed by escaping client hostnames in the lease state file. GHSA-hhmc-92hw-535f
• uhttpd (web server): three HTTP request smuggling issues on keep-alive connections were fixed:
  • CVE-2026-55612 (High): invalid chunk-length state reset. GHSA-p55c-rmhc-qfm5
  • CVE-2026-55614 (High): case-sensitive Transfer-Encoding matching. GHSA-mcfg-c4r7-pjpf
  • CVE-2026-55613 (Moderate): ubus POST body parse-error desync. GHSA-wgwp-64hh-f52p
• cgi-io: ACL bypass / arbitrary file read (Moderate): a path-traversal flaw in the cgi-download handler let an authenticated user with wildcard read permission read any root-readable file (e.g. /etc/shadow). GHSA-jw5r-xhf5-2xcq
• LuCI (web interface): a set of issues in LuCI core modules and applications were fixed. Most let a logged-in user with limited (delegated) permissions escalate to root command execution; a few are stored XSS issues reachable by clients on the network. The privilege-escalation issues only apply if the affected app is installed and the account/ACL in question exists:
  • luci-app-tailscale-community (Critical, CVSS 9.9): command injection allowing delegated users to run commands as root via tailscale.do_login. GHSA-xwc5-mx58-rh35
  • luci-app-advanced-reboot (High): CVE-2026-55897 — a read ACL exposes /bin/sh via file.exec, allowing delegated users to run commands as root. GHSA-vj96-f37g-37f6
  • luci-app-adblock-fast (High): CVE-2026-55159 — delegated users can reach root command execution via newline-separated cron entries. GHSA-ggpf-xrph-wg5v
  • luci-app-samba4 (High): a read ACL allows authenticated root command execution via the smbd file.exec permission. GHSA-vx64-mmp7-h36c
  • luci-app-travelmate (High): a delegated UCI write can execute the travelmate auto-login command as root. GHSA-p35r-3323-6g7g
  • luci-app-upnp (High): stored XSS — an unauthenticated LAN client can inject JavaScript via a UPnP port-mapping description. GHSA-8v49-6387-7f89
  • luci-mod-network / luci-mod-status (High): stored XSS via a DHCPv6 lease hostname (FQDN) shown in the status tables. GHSA-686p-p8p9-x6fh
  • luci-app-banip (High): a crafted LuCI login username can inject an arbitrary IP into banIP's log parser, causing the wrong address to be blocked. GHSA-r6hx-4f83-vp8m
• ead (Emergency Access Daemon): CVE-2026-55490 (Moderate): an integer underflow in handle_send_a() allowed a pre-auth denial of service. GHSA-9558-77jp-g3fw
• Linux kernel: update to 6.12.94, pulling in the upstream 6.12.88 through 6.12.94 stable releases, which fix multiple security vulnerabilities, such as CVE-2026-43500.
• OpenSSL: update to 3.5.7, fixing multiple security vulnerabilities (CVE-2026-7383, CVE-2026-9076, CVE-2026-34180, CVE-2026-34181, CVE-2026-34182, CVE-2026-34183, CVE-2026-42764, CVE-2026-42766, CVE-2026-42767, CVE-2026-42768, CVE-2026-42769, CVE-2026-42770, CVE-2026-45445, CVE-2026-45446, CVE-2026-45447).
• musl libc: backport upstream fixes for CVE-2026-6042 and CVE-2026-40200.
• dropbear (SSH): backport security fixes from upstream 2026.90 and 2026.91, including CVE-2019-6111 (a malicious server could trick the scp client into overwriting arbitrary local files) and CVE-2026-35385.

Beyond the issues listed above, this release fixes a number of further security problems for which no CVE number or dedicated advisory was assigned. We strongly recommend upgrading to the latest OpenWrt release and installing all available package updates.

New devices supported in 25.12.5:

• ipq40xx: Linksys MR9000
• mediatek (filogic): GL.iNET GL-MT3600BE
• mediatek (filogic): Huasifei WH3000R (NAND)
• mediatek (filogic): JioRouter AX6000 (JIDU6101)
• mediatek (filogic): netis EAP930 V1
• mediatek (filogic): netis MEX605
• mediatek (filogic): TP-Link F65 v1
• mediatek (filogic): Zbtlink ZBT-Z8106AX-S
• mvebu: Zyxel NAS326
• ramips (mt76x8): Cudy WR300 v1
• ramips (mt7621): I-O DATA WN-AX2033GR2

New image variants for already supported devices:

• mediatek (filogic): Qihoo 360T7 - add UBI layout image
• mediatek (filogic): Creatlentem CLT-R30B1 - add all-in-UBI layout image
• mediatek (filogic): Bazis AX3000WM - also recognized under its alternative name WD-R3000N-G2A

Device fixes:

• ath79: MikroTik - build AG71XX_LEGACY as a module, fixing AR8216/AR8236/AR8316 switch bring-up on boot on some MikroTik devices (#23739)
• mediatek: do not let devfreq power off the CPU (stability fix)
• mediatek (filogic): Wavlink WL-WN536AX6 rev A - several fixes (correct 5 GHz MAC address, MAC-address nvmem layout, NAND bad-block management, SPI drive strength, network LED)
• mediatek (filogic): Qihoo 360T7 - fix DDR3 rate
• mediatek: Acer Predator W6X - add LED boot status support
• ramips: PAX1800 Lite - fix label MAC device and avoid attaching both UBI partitions on boot
• ramips (mt76x8): Cudy LT300 v3 - fix backup partition offset
• rtl8367b: fix RTL8367S-VB VLAN multicast memory handling
• mvebu: uDPU / eDPU - convert to dual (A/B) firmware
• ipq806x: AP3935 - disable hibernation on LAN1
• airoha (an7581): platform improvements and upstream networking fixes

• wifi-scripts: fix a null dereference on 6 GHz-only radios
• wifi-scripts: fix EAP (802.1X) station mode in the wpa_supplicant configuration generator
• wifi-scripts: fix tracking of disabled virtual interfaces
• hostapd: fix a misplaced radar-detected (DFS) ubus notification

• New “network” LED trigger (lan/wan/wlan) for link and activity indication on supported devices
• odhcpd and odhcp6c received many DHCPv6/DHCPv4 and IPv6 prefix-delegation correctness and robustness fixes, on top of the security fixes listed above, including more stable DHCPv6 IAID handling
• More robust handling of invalid DHCP / DHCPv6 client identifiers
• ubus, rpcd, uhttpd, umdns, uclient and fstools updated with stability and hardening fixes

• kmod-nf-nathelper-extra was split into individual per-protocol packages, so only the needed NAT helper modules have to be installed. commit
• Matching the linker max-page-size to the target page size removes unnecessary padding, which can make many binaries - and thus the images - a bit smaller. commit
• OpenWrt builds are now more reproducible. commit

• Linux kernel: update from 6.12.87 to 6.12.94
• OpenSSL: update from 3.5.6 to 3.5.7 (multiple security fixes, see above)
• wireless-regdb: update from 2026.03.18 to 2026.05.30
• dnsmasq: update from 2.91 to 2.93
• ca-certificates: update from 20260223 to 20260601 (refreshed root CA bundle)
• util-linux: update from 2.41.3 to 2.41.5

Upgrading from 24.10 to 25.12 should be transparent on most devices, as most configuration data has either remained the same or will be translated correctly on first boot by the package init scripts. For upgrades within the OpenWrt 25.12 stable series, Attended Sysupgrade is also supported, which allows preserving the installed packages.

Sysupgrade from 23.05 or earlier to 25.12 is not officially supported.

Cron log level was fixed in busybox. system.@system[0].cronloglevel should be set to 7 for normal logging. 7 is the default now. If this option is not set, the default is used and no manual action is needed. commit

Bananapi BPI-R4: Interface eth1 was renamed to sfp-lan or lan4, and interface eth2 was renamed to sfp-wan to match the labels. You have to upgrade without saving the configuration. commit

TP-Link RE355 v1, RE450 v1 and RE450 v2: The partition layout and block size changed in this release to fix configuration loss on sysupgrade. Users upgrading from OpenWrt 25.12.0 or earlier must use sysupgrade -F to force the upgrade. The image must not exceed 5.875 MB (6016 KiB).

Meraki MX60: Direct sysupgrade to 25.12.5 is not possible without manual preparation — meraki_loadaddr must be changed before upgrading, as the default value is insufficient to boot OpenWrt 25.12+. See the device wiki page for instructions.

Sitecom WLR-7100 (X7 AC1200): This device was moved from the ath79/generic target to the ath79/tiny target in OpenWrt 25.12.4. Users upgrading from 25.12.3 or earlier need to flash the new image from the ath79/tiny target (use sysupgrade -F).

• Zyxel EX5601-T0: the WAN interface was renamed from eth1 to wan — check and update your network configuration after upgrading.
• Pixel 10 phones have problems connecting to WPA3-protected WiFi 6 APs. (#21486)
• 802.11r Fast Transition (FT) causes connection problems with some WiFi clients when WPA3 is used. (#22200)
• SQM CAKE MQ (cake_mq): throughput may be unexpectedly low on some configurations after the scheduler fixes in this release. (#22344)

As always, a big thank you goes to all our active package maintainers, testers, documenters, and supporters.

Have fun!

The OpenWrt Community