CVE-2026-72840

HighCVSS 8.8/10Last modified Sep 30, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-266

Affected software

No affected versions have been published.

Timeline

Published: Aug 13, 2026
Last modified: Sep 30, 2026
NVD status: Deferred

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