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Vulnerability record · CVE-2020-36870 · published 7 November 2025

CVE-2020-36870: Code injection vulnerability

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.

9.2 CVSS 4.0 Critical EPSS 0.75% · top 46.8% CWE-94 · Code injection Deferred
9.2CVSS 4.0 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2020-36870), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.