CVE-2024-21876

Enphase Iq Gateway Firmware path traversal

9.1 CRITICALEPSS 0.80%

Published12 Aug 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Enphase Iq Gateway Firmware≥ 4.0 < 8.2.4225

Remediation

Fixed in

Enphase Iq Gateway Firmware≥ 8.2.4225

Frequently asked

Is CVE-2024-21876 being actively exploited?

CVE-2024-21876 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.80%.

How severe is CVE-2024-21876?

CVE-2024-21876 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.80% probability of exploitation.

Which products are affected by CVE-2024-21876?

Affected products include Enphase Iq Gateway Firmware.

How do I fix CVE-2024-21876?

Upgrade affected software to a fixed version, for example Enphase Iq Gateway Firmware 8.2.4225 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-21876 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.