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CVE-2026-30874— OpenWrt procd PATH Environment Variable Filter Bypass via Incorrect String Comparison Leads to Privilege Escalation

Quick assessment

Affected
openwrt openwrt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenWrt是OpenWrt开源的一套针对嵌入式设备的Linux操作系统。 OpenWrt 24.10.6之前版本存在安全漏洞，该漏洞源于hotplug_call函数存在环境变量过滤绕过，可能导致权限提升。

AI Predicted 7.8 Difficulty: Easy EPSS 0.34% · P25
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I. Basic Information for CVE-2026-30874

Vulnerability Information
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Vulnerability Title
OpenWrt procd PATH Environment Variable Filter Bypass via Incorrect String Comparison Leads to Privilege Escalation
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
部分比较
Source: CVE Program / CVE List V5
Vulnerability Title
OpenWrt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenWrt是OpenWrt开源的一套针对嵌入式设备的Linux操作系统。 OpenWrt 24.10.6之前版本存在安全漏洞，该漏洞源于hotplug_call函数存在环境变量过滤绕过，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openwrt openwrt < 24.10.6 -

II. Public POCs for CVE-2026-30874

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III. Intelligence Information for CVE-2026-30874

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Patches & Fixes for CVE-2026-30874 (1)

Vendor Advisories for CVE-2026-30874 (1)

Same Patch Batch · openwrt · 2026-03-19 · 5 CVEs total

CVE-2026-32721 8.6 HIGH LuCI luci-mod-network: Possible XSS attack in WiFi scan on Joining Wireless Client modal
CVE-2026-30871 OpenWrt Project has Stack-based Buffer Overflow in DNS PTR Query
CVE-2026-30873 OpenWrt Project jsonpath: Memory leak when processing strings, labels, and regexp tokens
CVE-2026-30872 OpenWrt Project has a Stack-based Buffer Overflow vulnerability via IPv6 reverse DNS looku

IV. Related Vulnerabilities

Same product: openwrt
Same vendor: openwrt
Same weakness: CWE-187

V. Comments for CVE-2026-30874

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