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CVE-2024-21877Insecure File Generation Based on User Input in Enphase IQ Gateway version 4.x to 8.x and < 8.2.4225

Description

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability through a url parameter in Enphase IQ Gateway (formerly known as Envoy) allows File Manipulation. The endpoint requires authentication.This issue affects Envoy: from 4.x to 8.0 and < 8.2.4225.

Timeline

  1. ID reserved

    By DIVD

  2. · 7 months later

    Published

  3. · 7 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-21877, by who scored it
Scored byCVSSScoreVector
DIVDCNA (assigner)4.0High8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/S:N/AU:Y/V:D/RE:H
DIVDCNA (assigner)4.0Critical9.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/S:P/AU:Y/R:I/V:C/RE:H
NVDNVD · Analyzed4.0Critical9.2CVSS: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
EPSS (exploitation in 30 days)
0.79% · top 43% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Affected products

  • Enphase · Envoy

    • affected 8.0 – < 8.2.4225
    • affected 7.x
    • affected 6.x
    • affected 5.x
    • affected 4.x

What to do

Solution: Devices are remotely being updated by the vendor.

Workaround: It is adviced to not expose this device to untrusted network acces. In other words, make sure this decvice is not reachable from the internet, a guest network or a public network.

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .