Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openwrt | Openwrt | < 24.10.6 |
Related Weaknesses (CWE)
References
- https://github.com/openwrt/openwrt/security/advisories/GHSA-jw28-hxcm-j934PatchVendor Advisory
- https://github.com/openwrt/procd/commit/e08cdc8562f55b9ac228a21f3f7605a18c522b81Patch
FAQ
What is CVE-2026-30874?
CVE-2026-30874 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 fil...
How severe is CVE-2026-30874?
CVE-2026-30874 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-30874?
Check the references section above for vendor advisories and patch information. Affected products include: Openwrt Openwrt.