Openwrt
CVE-2026-30874
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessLocal authenticated user crafts malicious PATH variable
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DeliveryHotplug_call function fails to filter PATH due to strcmp bug
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ExploitInjected PATH bypasses security check
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ExecutionHotplug script executes with attacker-controlled PATH
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ImpactArbitrary code execution with elevated privileges
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V14 - Configuration Dependency management, component inventory
|
| Exploitation Conditions | Requires local user access on OpenWrt versions prior to 24.10.6. Attacker must trigger hotplug event execution with custom PATH environment variable to exploit the environment variable filtering bypass in hotplug_call function. No victim interaction needed. |
| Impact | An attacker with limited access can gain administrative or root privileges, enabling full control over the affected system. |
| Exploit ScenarioDerived | A local attacker exploits a vulnerability in a privileged service or misconfigured permissions to escalate from a standard user to root/administrator. |
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Alert meAnalysisAIv1 – Mar 19, 2026
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. No patch is currently available.
Earlier versions of this analysis (1)
RemediationAI
Apply the principle of least privilege. Keep systems patched. Monitor for suspicious privilege changes. Use mandatory access controls (SELinux, AppArmor).
Affects your stack
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Technical ContextAI · show details
Privilege escalation allows a low-privileged user or process to gain elevated permissions beyond what was originally authorized.
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
DescriptionGitHub Advisory
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.
Executive ViewAI
Organizations using versions face notable risk from CVE-2026-30874 rated CVSS 7.8. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Affected Products (CPE)GitHub Advisory
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Exploit-DB