CVE-2024-21881: Enphase Envoy

High severity, CVSS 8.6. EPSS: 0.3% chance of exploitation in the next 30 days.

Inadequate Encryption Strength vulnerability allow an authenticated attacker to execute arbitrary OS Commands via encrypted package upload.This issue affects Envoy: 4.x and 5.x

Affected products

• Enphase Envoy: from 5, before 6 (fixed in 6); from 4, before 5 (fixed in 5)

Published 2024-08-12. Last modified 2026-06-17.