{"id":"CVE-2026-55897","published":"2026-09-21T20:17:26.670","lastModified":"2026-09-24T21:25:27.050","description":"luci-app-advanced-reboot is a LuCI (web interface) application for OpenWrt that provides a  way to reboot your router into an alternative firmware partition or perform  reboot operations directly from the web UI. Prior to 1.1.2-6, the luci-app-advanced-reboot read ACL in applications/luci-app-advanced-reboot/root/usr/share/rpcd/acl.d/luci-app-advanced-reboot.json grants rpcd file.exec permission for the general shell interpreter /bin/sh. An authenticated delegated session with that read ACL can supply caller-controlled params; rpcd authorizes the executable path and passes those arguments to the shell, allowing arbitrary commands to execute as root. Builds without the /bin/sh exec grant, including the checked openwrt-24.10 and openwrt-23.05 branches, are not affected by this specific chain. This vulnerability is fixed in 1.1.2-6.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-78"],"vendors":[],"products":[],"references":[{"url":"https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f","tags":[]},{"url":"https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829","tags":[]},{"url":"https://github.com/openwrt/luci/pull/8710","tags":[]},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","tags":[]},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","tags":[]}],"exploitRefs":[{"url":"https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f","tags":[]},{"url":"https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829","tags":[]},{"url":"https://github.com/openwrt/luci/pull/8710","tags":[]},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","tags":[]},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows an authenticated user with specific permissions to execute arbitrary commands as root via the luci-app-advanced-reboot web interface, posing a significant security risk.","exploitability":"Exploitation requires an authenticated session with read ACL on the rpcd file, making it moderately difficult. Precondition is the presence of the affected version of luci-app-advanced-reboot.","blast_radius":"If exploited, this vulnerability could lead to complete compromise of the router, including loss of control and potential data exfiltration.","remediation":"Upgrade to luci-app-advanced-reboot version 1.1.2-6 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","web","auth-bypass","root","arbitrary-command"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-29T09:15:48.409Z"}}