CVE-2020-36870
High PUBLISHEDRuijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Nov 07, 2025
- Exploitation Reported
- Jan 24, 2026
- CVSS
- 9.2 Critical
- EPSS
- —
Affected Versions
37 version rows · page 2 of 2
| Vendor | Product | Version | Status |
|---|---|---|---|
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR2500D-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR3000D-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR6120-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR6135-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR6205-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR6210-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR6215-E
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR800G
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR950G
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR1000G-C
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR2000G-C
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
| Beijing Star-Net Ruijie Network Technology Co., Ltd. |
NBR3000G-S
|
11.1(6)B9P1 to < 11.9(4)B12P1 |
Affected |
CVE References
- 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...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2026-01-24 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
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
Exploitation Status
Exploited in the wild
Recorded 2026-01-24 00:00:00 UTC · The Shadowserver
Weaknesses (CWE)
-
Improper Control of Generation of Code ('Code Injection')
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC 6 months ago00:00 UTC · 6 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
21:52 UTC 8 months ago21:52 UTC · 8 months ago
CVE published
Vulnerability disclosed publicly
-
15:45 UTC 9 months ago15:45 UTC · 9 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2020-36870
{
"cve_id": "CVE-2020-36870",
"title": "Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE",
"affected_vendor": "Beijing Star-Net Ruijie Network Technology Co., Ltd.",
"affected_product": "RG-EG1000C, RG-EG2000F, RG-EG2000K, RG-EG2000L, RG-EG2000CE, RG-EG2000SE, RG-EG2000GE, RG-EG2000XE, RG-EG2000UE, RG-EG3000CE, RG-EG3000SE, RG-EG3000GE, RG-EG3000ME, RG-EG3000UE, RG-EG3000XE, RG-EG2100-P, EG3210, EG3220, EG3230, EG3250, NBR108G-P, NBR1000G-E, NBR1300G-E, NBR1700G-E, NBR2100G-E, NBR2500D-E, NBR3000D-E, NBR6120-E, NBR6135-E, NBR6205-E, NBR6210-E, NBR6215-E, NBR800G, NBR950G, NBR1000G-C, NBR2000G-C, NBR3000G-S",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 9.2,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}