How severe is CVE-2020-37135?

CVE-2020-37135 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-2020-37135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2020-37135?

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.

Does CVE-2020-37135 have an EU (EUVD) identifier?

Yes. CVE-2020-37135 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31104.

When was CVE-2020-37135 published?

CVE-2020-37135 was published on 2026-02-07 and last updated on 2026-06-17.

CVE-2020-37135

CVE-2020-37135 is a high-severity vulnerability 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-798.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 9.3
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-31104
Weakness: CWE-798
Published: 2026-02-07
Last modified: 2026-06-17

Description

AMSS++ 4.7 contains an authentication bypass vulnerability that allows attackers to access administrative accounts using hardcoded credentials. Attackers can log in with the default admin username and password '1234' to gain unauthorized administrative access to the system.

Frequently asked questions

What is CVE-2020-37135?: AMSS++ 4.7 contains an authentication bypass vulnerability that allows attackers to access administrative accounts using hardcoded credentials. Attackers can log in with the default admin username and password '1234' to gain unauthorized administrative access to the system.
How severe is CVE-2020-37135?: CVE-2020-37135 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-2020-37135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2020-37135?: 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.
Does CVE-2020-37135 have an EU (EUVD) identifier?: Yes. CVE-2020-37135 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31104.
When was CVE-2020-37135 published?: CVE-2020-37135 was published on 2026-02-07 and last updated on 2026-06-17.

References

Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities

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