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CVE-2020-25754

HIGH
7.5
CVSS Score
Published: June 16, 2021 at 06:27 PM UTC
Updated: June 17, 2026 at 03:07 AM UTC
2 products affected across 1 vendorEnvoy FirmwareEnvoy

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Envoy Firmware· Enphase
95%
d4.0r3.0
enphase-envoy (same device)
Envoy· Enphasedevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCProductVendor Advisory
Source: [email protected]
https://enphase.com/en-us/products-and-services/envoy-and-combiner
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://stage2sec.com

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-916

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