CVE-2026-72840
8.7
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-266: Incorrect Privilege Assignment
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
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