Unauthenticated File Upload Vulnerability in Ruijie NBR Series Routers
CVE-2023-7330

9.3CRITICAL

Key Information:

Vendor

Beijing Star-net Ruijie Network Technology Co., Ltd.

Status
Nbr Series Routers
Vendor
CVE Published:
24 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-7330?

Ruijie NBR series routers are susceptible to an unauthenticated arbitrary file upload vulnerability through the endpoint /ddi/server/fileupload.php. The issue arises as the endpoint inadequately validates and sanitizes user-supplied values in the 'name' and 'uploadDir' parameters, allowing attackers to upload malicious files, such as PHP scripts. Once uploaded, these files are accessible from the web root, enabling remote attackers to execute arbitrary code within the context of the web service. This vulnerability presents a significant security risk, potentially leading to unauthorized access and control over the affected systems.

Affected Version(s)

NBR Series Routers 0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-7330 - Proof of Concept

CVE-2023-7330 - Proof of Concept

CVE-2023-7330 - Proof of Concept

References

https://github.com/projectdiscovery/nuclei-templates/blob...
exploit
https://cn-sec.com/archives/1995366.html
exploit
https://www.cnblogs.com/Domren/articles/19093295
exploit

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2023-7330 : Unauthenticated File Upload Vulnerability in Ruijie NBR Series Routers