CVE-2026-30874
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2Tags
Description
OpenWrt Project is a Linux operating system targeting embedded devices. In versions prior to 24.10.6, a vulnerability in the hotplug_call function allows an attacker to bypass environment variable filtering and inject an arbitrary PATH variable, potentially leading to privilege escalation. The function is intended to filter out sensitive environment variables like PATH when executing hotplug scripts in /etc/hotplug.d, but a bug using strcmp instead of strncmp causes the filter to compare the full environment string (e.g., PATH=/some/value) against the literal "PATH", so the match always fails. As a result, the PATH variable is never excluded, enabling an attacker to control which binaries are executed by procd-invoked scripts running with elevated privileges. This issue has been fixed in version 24.10.6.
Analysis
OpenWrt versions prior to 24.10.6 allow local attackers with limited privileges to inject a malicious PATH environment variable into hotplug scripts due to improper filtering in the hotplug_call function, enabling execution of arbitrary binaries with elevated privileges. The vulnerability stems from a strcmp/strncmp logic error that fails to properly exclude the PATH variable when executing scripts in /etc/hotplug.d, resulting in local privilege escalation. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 7 days: Identify all affected systems running versions and apply vendor patches promptly. Monitor vendor channels for patch availability.
Sign in for detailed remediation steps.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today