CVE-2020-36870 (GCVE-0-2020-36870)
Vulnerability from cvelistv5 – Published: 2025-11-07 21:52 – Updated: 2025-11-20 21:32 X_Known Exploited VulnerabilityTitle
Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-13 16:10 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.ruijie.com.cn/gy/xw-aqtg-zw/85638/ | vendor-advisorypatch |
| https://www.ruijie.com.cn/gy/xw-aqtg-gw/86747/ | vendor-advisorypatch |
| https://www.cnvd.org.cn/flaw/show/CNVD-2021-09650 | government-resourcethird-party-advisory |
| https://www.vulncheck.com/advisories/ruijie-netwo… | third-party-advisory |
Impacted products
37 products
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: bcc9faff-a152-483a-a04d-6f6ae36d2ee5
Exploited: Yes
Timestamps
First Seen: 2026-01-08
Asserted: 2026-01-08
Last Seen: 2026-11-12
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Ruijie Networks / NBR | Class: router | IoT: no | In CISA KEV: no | Honeypot connections on 2026-11-12: 296
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 4 |
|---|---|
| Iot | no |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | router |
| 7D Avg | 2 |
| Vendor | Ruijie Networks |
| 30D Avg | 1 |
| 90D Avg | 2 |
| Product | NBR |
| Cisa Kev | no |
| Connections | 296 |
| Observation Date | 2026-11-12 |
| Vulnerability Class | None |
| Vulnerability Score | None |
| Vulnerability Severity | None |
References
Created: 2026-07-01 05:53 UTC
| Updated: 2026-11-14 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e3fb971d-d395-4a09-97c6-de1375041378
Exploited: Yes
Timestamps
First Seen: 2026-01-24
Asserted: 2026-01-24
Scope
Notes: KEVIntel entry: Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE | Affected: Beijing Star-Net Ruijie Network Technology Co., Ltd. / 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 | CVSS: 9.2 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE |
| Vendor | Beijing Star-Net Ruijie Network Technology Co., Ltd. |
| 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 |
| Added Date | 2026-01-24T00:00:00.000Z |
| Cvss Score | 9.2 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-19 12:42 UTC
| Updated: 2026-06-19 12:42 UTC
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.