Is CVE-2024-21876 actively exploited?

No active exploitation of CVE-2024-21876 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-21876 be exploited remotely?

Yes. CVE-2024-21876 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-21876?

CVE-2024-21876 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2024-21876

CWE-22Published: August 12, 2024· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official 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.

NVD Source

Risk Analysis

Enphase IQ Gateway devices contain a path traversal vulnerability that allows unauthenticated attackers to access or create arbitrary files. This critical flaw is remotely exploitable and requires no user interaction.

No public exploit is known, and it is not in the KEV.

Recommended Action

Upgrade to firmware version 8.2.4225 or later to remediate this path traversal vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2024-21876 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.