CVE-2020-36870Known exploitationNetwork attack vector

Unauthenticated command execution via EWEB front-end

Published Nov 7, 2025 · Updated Nov 7, 2025

Command injection in Ruijie EG and NBR gateway firmware before 11.9(4)B12P1 allows remote attackers to execute commands through EWEB. Ruijie has not disclosed the vulnerable EWEB request, parameter, or command-construction operation. The issue is unauthenticated but requires guest authentication, local-server authentication, or screen mirroring to be enabled; successful exploitation grants device control.

CVSS severity9.2
Critical
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Ruijie EG and NBR gateway firmware before 11.9(4)B12P1 allows remote attackers to execute commands through EWEB. Ruijie has not disclosed the vulnerable EWEB request, parameter, or command-construction operation. The issue is unauthenticated but requires guest authentication, local-server authentication, or screen mirroring to be enabled; successful exploitation grants device control.

The record

CVE
CVE-2020-36870
Published
Nov 7, 2025
Updated
Nov 7, 2025
Vendor
Ruijie Networks
Product
RG-NBR2100G-E
Classifications
CWE-94, CAPEC-242, T1190, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025Exploitation reportedShadowserver observed exploitation activity
  2. Nov 7, 2025CVE publishedPublication date reported by the CVE source.
  3. Nov 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.1(6)B9P1 <11.9(4)B12P1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ruijie Networks · RG-NBR2100G-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR6120-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000GEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR2000G-Cversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000XEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000CEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000Fversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR1300G-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG1000Cversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR108G-Pversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000SEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR2500D-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3220version=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3250version=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR6215-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000CEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR800Gversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000MEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000GEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR6205-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000SEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3000UEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR1000G-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000UEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000XEversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR3000D-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3210version=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG3230version=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000Lversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2000Kversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR950Gversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR1700G-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR6135-Eversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR1000G-Cversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR3000G-Sversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-EG2100-Pversion=11.1(6)B9P1 <11.9(4)B12P1
Ruijie Networks · RG-NBR6210-Eversion=11.1(6)B9P1 <11.9(4)B12P1

Published CVSS scores

9.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CAPEC-242Code Injection
T1190Exploit Public-Facing Application
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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