HOMEVULNERABILITIESCVE-2020-25754
HIGH

CVE-2020-25754

CWE-916Published: June 16, 2021· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-25754 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

enphase2 product(s)
envoy firmwareenvoy
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://enphase.com/en-us/products-and-services/envoy-and-combiner
ADVISORYhttps://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a
ADVISORYhttps://stage2sec.com
ADVISORYhttps://enphase.com/en-us/products-and-services/envoy-and-combiner
ADVISORYhttps://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a
ADVISORYhttps://stage2sec.com

All References (6)

→
https://enphase.com/en-us/products-and-services/envoy-and-combinerProduct · Vendor Advisory
→
https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661aExploit · Third Party Advisory
→
https://stage2sec.comThird Party Advisory
→
https://enphase.com/en-us/products-and-services/envoy-and-combinerProduct · Vendor Advisory
→
https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661aExploit · Third Party Advisory
→
https://stage2sec.comThird Party Advisory

Quick Facts

CVE IDCVE-2020-25754
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-916
CISA KEVNo
Affected1 vendor(s)
PublishedJun 16, 2021

Related CVEs (CWE-916)

CVE-2020-14516
10.0
CVE-2018-10618
9.8
CVE-2019-17216
9.8
CVE-2018-15680
9.8
CVE-2021-36767
9.8
CVE-2024-5743
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-25754 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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