How severe is CVE-2020-36870?

CVE-2020-36870 has a CVSS 4.0 base score of 9.2, rated critical severity.

Is CVE-2020-36870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2020-36870?

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

Does CVE-2020-36870 have an EU (EUVD) identifier?

Yes. CVE-2020-36870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30818.

When was CVE-2020-36870 published?

CVE-2020-36870 was published on 2025-11-07 and last updated on 2026-06-17.

CVE-2020-36870

CVE-2020-36870 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.2. 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-94.

Key facts

Severity: Critical (CVSS 4.0 base score 9.2)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30818
Weakness: CWE-94
Published: 2025-11-07
Last modified: 2026-06-17

Description

Various Ruijie Gateway EG and NBR models firmware versions 11.1(6)B9P1 < 11.9(4)B12P1 contain a code execution vulnerability in the EWEB management system that can be abused via front-end functionality. Attackers can exploit front-end code when features such as guest authentication, local server authentication, or screen mirroring are enabled to gain access or execute commands on affected devices. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-05 UTC.

Frequently asked questions

What is CVE-2020-36870?: Various Ruijie Gateway EG and NBR models firmware versions 11.1(6)B9P1 < 11.9(4)B12P1 contain a code execution vulnerability in the EWEB management system that can be abused via front-end functionality. Attackers can exploit front-end code when features such as guest authentication, local server authentication, or screen mirroring are enabled to gain access or execute commands on affected devices. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-05 UTC.
How severe is CVE-2020-36870?: CVE-2020-36870 has a CVSS 4.0 base score of 9.2, rated critical severity.
Is CVE-2020-36870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2020-36870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2020-36870 have an EU (EUVD) identifier?: Yes. CVE-2020-36870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30818.
When was CVE-2020-36870 published?: CVE-2020-36870 was published on 2025-11-07 and last updated on 2026-06-17.

References

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CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

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