What is CVE-2020-36870?

CVE-2020-36870 is an unauthenticated Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE affecting Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C and 36 other products. 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...

Is CVE-2020-36870 actively exploited?

Yes. KEV Intelligence tracks CVE-2020-36870 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2020-36870. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2020-36870 affects Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C and 36 other products. KEV Intelligence lists 37 version rows; examples include 11.1(6)B9P1 to < 11.9(4)B12P1.

No. CVE-2020-36870 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2020-36870

Q: Is CVE-2020-36870 actively exploited?

Yes. KEV Intelligence tracks CVE-2020-36870 as a known exploited vulnerability. Confidence is high.

Q: What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2020-36870. Our sensors continue to monitor for activity targeting this CVE.

Q: Which versions are affected?

CVE-2020-36870 affects Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C and 36 other products. KEV Intelligence lists 37 version rows; examples include 11.1(6)B9P1 to < 11.9(4)B12P1.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

No. CVE-2020-36870 is not currently listed in CISA KEV.

Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE

Beijing Star-Net Ruijie Network Technology Co. / RG-EG1000C · affected before 11.9(4)B12P1

View live feed Monitor via API Watch CVE

Severity: CVSS 9.2 · Critical
Confidence: High
Exploit status: Exploited in the wild
EPSS: 0.8%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2020-36870 is an unauthenticated Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE affecting Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C and 36 other products. Various Ruijie...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Beijing Star-Net Ruijie Network Technology Co., Ltd. / RG-EG1000C affected before 11.9(4)b12p1.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE

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.

Vendor Product Affected Status

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000F Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000K Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000L Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000CE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000SE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000GE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000XE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000UE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000CE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000SE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000GE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000ME Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000UE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000XE Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2100-P Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3210 Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3220 Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3230 Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3250 Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR108G-P Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1000G-E Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1300G-E Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1700G-E Before 11.9(4)B12P1 Affected

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR2100G-E Before 11.9(4)B12P1 Affected

View vendor advisory

Published: 07 Nov 2025
Exploitation Reported: 24 Jan 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2020-36870
Vendor Advisory — ruijie.com.cn ruijie.com.cn · Vendor Advisory https://www.ruijie.com.cn/gy/xw-aqtg-zw/85638/
Vendor Advisory — ruijie.com.cn ruijie.com.cn · Vendor Advisory https://www.ruijie.com.cn/gy/xw-aqtg-gw/86747/
Third-Party Advisory — cnvd.org.cn cnvd.org.cn · Third-Party Advisory https://www.cnvd.org.cn/flaw/show/CNVD-2021-09650
Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/ruijie-networks-eg-and-nbr-serie...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 24 Jan 2026

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2026-01-24 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.2 Critical

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

EPSS

0.8%

Weaknesses

Improper Control of Generation of Code ('Code Injection') CWE-94

Timeline

From disclosure to observed exploitation

24 Jan 2026
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
07 Nov 2025
CVE published

Vulnerability disclosed publicly
30 Oct 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2020-36870

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2020-36870",
  "confidence": "High",
  "cvss_score": 9.2,
  "cvss_estimated": false,
  "epss_score": 0.00753,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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CVE-2020-36870

Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE

CVE References

Exploited in the wild

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Weaknesses

Added to KEV Intelligence KEV Feed

CVE published

CVE ID reserved

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