CVE-2026-94101
Received Received - Intake

Buffer Overflow in Netcore NBR200V2 Router Firmware

Vulnerability report for CVE-2026-94101, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-21

Last updated on: 2026-09-21

Assigner: VulDB

Description

A security vulnerability has been detected in Netcore NBR200V2 1.3.241127.071246. The affected element is the function vlan_load_form_uci of the file /usr/bin/routerd. The manipulation of the argument wan_num leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-21
Last Modified
2026-09-21
Generated
2026-09-21
AI Q&A
2026-09-21
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
netcore nbr200v2 1.3.241127.071246

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a buffer overflow in Netcore NBR200V2 1.3.241127.071246 affecting the function vlan_load_form_uci in /usr/bin/routerd. It is triggered by manipulating the wan_num argument, allowing remote attackers to execute arbitrary code or cause denial of service.

Detection Guidance

This vulnerability involves a buffer overflow in the vlan_load_form_uci function of Netcore NBR200V2 1.3.241127.071246 due to the wan_num argument. Detection requires checking for the affected firmware version and monitoring for unusual network traffic or crashes in the routerd process.

Impact Analysis

The vulnerability allows remote attackers to gain control of the affected device, potentially leading to unauthorized access, data theft, or disruption of network services. Systems using the vulnerable Netcore NBR200V2 firmware are at risk.

Compliance Impact

This vulnerability, a buffer overflow in Netcore NBR200V2, could potentially lead to unauthorized access or data breaches due to remote exploitation. Such breaches may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) if sensitive data is exposed. The high CVSS scores indicate a severe impact on confidentiality, integrity, and availability.

Mitigation Strategies

Immediately isolate the affected Netcore NBR200V2 device from the network to prevent remote exploitation. Contact Netcore for a firmware update or patch. Monitor network traffic for unusual activity targeting the router. Disable remote administration features if enabled.

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