Is CVE-2024-21878 actively exploited?

No active exploitation of CVE-2024-21878 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-21878 be exploited remotely?

Yes. CVE-2024-21878 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-21878?

CVE-2024-21878 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2024-21878

CWE-77Published: August 12, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Enphase IQ Gateway (formerly known as Envoy) allows OS Command Injection. This vulnerability is present in an internal script.This issue affects Envoy: from 4.x up to and including 8.x and is currently unpatched.

NVD Source

Risk Analysis

Enphase IQ Gateway devices are susceptible to OS command injection due to an internal script flaw. This critical vulnerability is remotely exploitable without authentication, posing a significant risk to affected gateways.

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

Recommended Action

As this issue is currently unpatched, users should isolate the device from the internet and monitor for vendor security advisories.

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-2024-21878 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), availability disruption (denial of service), with a CVSS base score of 9.8.