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...
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 Co. / RG-EG1000C · affected before 11.9(4)B12P1
- 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.
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.
NBR2500D-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR3000D-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR6120-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR6135-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR6205-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR6210-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR6215-E
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR800G
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR950G
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR1000G-C
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
NBR2000G-C
Before 11.9(4)B12P1
Affected
Beijing Star-Net Ruijie Network Technology Co., Ltd.
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 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
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.
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
- 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%
Timeline
From disclosure to observed exploitation
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE published
Vulnerability disclosed publicly
-
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
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
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.