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CVE-2024-21878

28
FAUCET Score

CVE-2024-21878 is a critical command injection vulnerability (CWE-77, CWE-78) affecting Enphase IQ Gateway (formerly Envoy) versions 4.x through 8.x, allowing unauthenticated attackers to execute arbitrary OS commands. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code or evidence of active exploitation, and it has received minimal community or media attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, < 8.2.4225CPE matchmatch criteria
cpe:2.3:o:enphase:iq_gateway_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.2CRITICAL

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:I/V:C/RE:H/U:X

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
LOW
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 57th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

csirt.divd.nl / CVE-2024-21878
Third Party Advisory
csirt.divd.nl / DIVD-2024-00011
Third Party Advisory
enphase.com / cybersecurity/advisories/ensa-2024-3
Vendor Advisory