How severe is CVE-2020-25754?

CVE-2020-25754 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-25754 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25754?

CVE-2020-25754 primarily affects Enphase Envoy Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-25754?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25754 published?

CVE-2020-25754 was published on 2021-06-16 and last updated on 2026-06-17.

CVE-2020-25754

CVE-2020-25754 is a high-severity vulnerability in Enphase Envoy Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-916.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-916
Affected product: Enphase Envoy Firmware
Published: 2021-06-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-25754?: 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.
How severe is CVE-2020-25754?: CVE-2020-25754 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-25754 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25754?: CVE-2020-25754 primarily affects Enphase Envoy Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-25754?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25754 published?: CVE-2020-25754 was published on 2021-06-16 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:enphase:envoy_firmware:d4.0:*:*:*:*:*:*:*
cpe:2.3:o:enphase:envoy_firmware:r3.0:*:*:*:*:*:*:*

More vulnerabilities in Enphase Envoy Firmware

CVE-2020-25753 — Critical (CVSS 9.8): An issue was discovered on Enphase Envoy R3.x and D4.x devices with v3 software. The default admin password is set to…
CVE-2020-25755 — High (CVSS 8.8): An issue was discovered on Enphase Envoy R3.x and D4.x (and other current) devices. The upgrade_start function in…
CVE-2023-33869 — Medium (CVSS 6.3): Enphase Envoy versions D7.0.88 is vulnerable to a command injection exploit that may allow an attacker to execute root…
CVE-2020-25752 — Medium (CVSS 5.3): An issue was discovered on Enphase Envoy R3.x and D4.x devices. There are hardcoded web-panel login passwords for the…

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