VDB-331580 · CVE-2020-36870 · EUVD-2020-30818

Ruijie RG-EG1000C prior 11.9(4)B12P1 EWEB Management System code injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Ruijie 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 and NBR3000G-S and classified as critical. The impacted element is an unknown function of the component EWEB Management System. Such manipulation leads to code injection. This vulnerability is referenced as CVE-2020-36870. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Ruijie 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 and NBR3000G-S. Affected by this issue is an unknown code of the component EWEB Management System. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at ruijie.com.cn. This vulnerability is handled as CVE-2020-36870 since 10/30/2025. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 11.9(4)B12P1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2020-30818). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Ruijie

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: 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 11.9(4)B12P1

Timelineinfo

10/30/2025 CVE reserved
11/08/2025 +9 days Advisory disclosed
11/08/2025 +0 days VulDB entry created
11/21/2025 +13 days VulDB entry last update

Sourcesinfo

Advisory: ruijie.com.cn
Status: Confirmed

CVE: CVE-2020-36870 (🔒)
GCVE (CVE): GCVE-0-2020-36870
GCVE (VulDB): GCVE-100-331580
EUVD: 🔒

Entryinfo

Created: 11/08/2025 07:34
Updated: 11/21/2025 07:39
Changes: 11/08/2025 07:34 (66), 11/21/2025 01:02 (1), 11/21/2025 07:39 (1)
Complete: 🔍
Cache ID: 216::103