VULNERABILITY INTELLIGENCE
CVE-2026-72840
CVSS score8.8 HIGH
EPSS probability0.44%
CISA KEVNot currently listed
Published2026-08-13
Last modified2026-09-30
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-266