CVE-2026-72840

Published: Ago 14, 2026 Last Modified: Ago 14, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 8,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

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.

266

Incorrect Privilege Assignment

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/openwrt/luci/security/advisories/GHSA-v5…
https://github.com/openwrt/luci/security/advisories/GHSA-v5f9-62c7-cw29
https://www.vulncheck.com/advisories/openwrt-luci-luci-mod-…
https://www.vulncheck.com/advisories/openwrt-luci-luci-mod-system-mounts-acl-ro…