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 RG-EG1000C and 36 other products. Various Ruijie Gateway EG and...
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2020-36870
Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE
Beijing Star-Net Ruijie Network Technology / RG-EG1000C · affected before 11.9(4)B12P1
- Severity
- CVSS 9.2 · Critical
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 0.6%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.
Who is affected?
Beijing Star-Net Ruijie Network Technology / 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.
Affected
RG-EG1000C
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000F
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000K
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000L
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000CE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000SE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000GE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000XE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2000UE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000CE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000SE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000GE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000ME
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000UE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG3000XE
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
RG-EG2100-P
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
EG3210
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
EG3220
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
EG3230
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
EG3250
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR108G-P
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR1000G-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR1300G-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR1700G-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR2100G-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR2500D-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR3000D-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR6120-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR6135-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR6205-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR6210-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR6215-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR800G
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR950G
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR1000G-C
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR2000G-C
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
Affected
NBR3000G-S
Before 11.9(4)B12P1
Affected
- 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 Previdian 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
A trusted third party reported exploitation.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the Previdian Pro API.
Learn about Pro API access| 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
- User-Agents
- Callback hosts
- 0
- 0
- 0
Request targets and User-Agents available in Pro. Callback host details available in Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No Previdian 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
Potential damage if exploited. Separate from whether attackers are using it.
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
0.6%
Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.
Timeline
From disclosure to observed exploitation
-
00:00 UTC
Added to Previdian KEV Feed
High-confidence, third-party attested exploitation
-
21:52 UTC
CVE published
Vulnerability disclosed publicly
-
15:45 UTC
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- 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
Sample API response{
"cve_id": "CVE-2020-36870",
"confidence": "High",
"cvss_score": 9.2,
"cvss_estimated": false,
"epss_score": 0.0062,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}