CVE-2024-21876: Unauthenticated Path Traversal via URL Parameter in Enphase IQ Gateway version < 8.2.4225

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-12 · updated 2026-06-17
Weakness: CWE-22

Description

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability via a URL parameter in Enphase IQ Gateway (formerly known as Envoy) allows an unautheticated attacker to access or create arbitratry files.This issue affects Envoy: from 4.x to 8.x and < 8.2.4225.

Affected products

Enphase IQ Gateway: from 4.0 before 8.2.4225 — fixed in 8.2.4225

How to fix

Upgrade to a fixed version: Enphase IQ Gateway 8.2.4225. Check the vendor advisory for mitigations.

References

https://csirt.divd.nl/CVE-2024-21876
https://csirt.divd.nl/DIVD-2024-00011
https://enphase.com/cybersecurity/advisories/ensa-2024-1

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