High severity7.5NVD Advisory· Published Jun 16, 2021· Updated Jun 17, 2026
CVE-2020-25754
CVE-2020-25754
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.
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Affected products
2- Enphase/Envoydescription
Patches
Vulnerability mechanics
References
3- medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661anvdExploitThird Party Advisory
- enphase.com/en-us/products-and-services/envoy-and-combinernvdProductVendor Advisory
- stage2sec.comnvdThird Party Advisory
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