{"id":"CVE-2026-72840","revision":"6bd23f1d85d24d7f89f7874d8d5992e3","records":[{"revision":"6bd23f1d85d24d7f89f7874d8d5992e3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72840","aliases":[],"title":"OpenWrt LuCI luci-mod-system-mounts ACL Root RCE via Crontab Write","description":"OpenWrt LuCI contains an overly permissive ACL definition in luci-mod-system-mounts that grants write access to /etc/crontabs/root to users intended only for mount configuration. Authenticated users with only the mount-configuration ACL group can append arbitrary cron entries via ubus file.write, which the default busybox crond daemon executes as root within one minute.","state":0,"publishedAt":"2026-08-13T21:54:39.948+00:00","modifiedAt":"2026-09-30T17:20:23.228+00:00","affected":[{"ecosystem":"Vendor product","name":"luci","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openwrt\",\n                    \"product\": \"luci\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\",\n                            \"lessThanOrEqual\": \"24.10.8\"\n                        },\n                        {\n                            \"version\": \"25.12.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\",\n                            \"lessThanOrEqual\": \"25.12.5\"\n                        }\n                    ],\n                    \"modules\": [\n                        \"luci-mod-system\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/openwrt/luci/security/advisories/GHSA-v5f9-62c7-cw29","https://www.vulncheck.com/advisories/openwrt-luci-luci-mod-system-mounts-acl-root-rce-via-crontab-write"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72840","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72840","identifiers":["CVE-2026-72840"]},"retained":false,"historicalAffected":[]}],"coverage":[]}