{"id":"CVE-2026-55897","title":"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","summary":"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 lu…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"vendor":"openwrt","product":"luci","affected":["luci < 1.1.2-6"],"published":"2026-09-21","updated":"2026-09-21","sourceUpdated":"2026-09-21T21:17:05.723","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55897","references":[{"url":"https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f","label":"security-advisories@github.com"},{"url":"https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829","label":"security-advisories@github.com"},{"url":"https://github.com/openwrt/luci/pull/8710","label":"security-advisories@github.com"},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","label":"security-advisories@github.com"},{"url":"https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-21T20:05:24.106310Z"},"ingestedAt":"2026-09-21T19:51:58.875Z","epss":0.00463,"epssPercentile":0.39403,"slug":"CVE-2026-55897","body":"## Overview\n\nluci-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":208786,"id":"CVE-2026-55897","ts":1790024015879,"field":"exploit_available","old":"false","new":"true"}]}