VDB-358432 · CVE-2026-41039 · CIVN-2026-0200

Quantum Router QN-I-470 6.1.1.B1 API Endpoint missing authentication

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Quantum Router QN-I-470 6.1.1.B1 and classified as critical. This affects an unknown function of the component API Endpoint. Executing a manipulation can lead to missing authentication. This vulnerability is tracked as CVE-2026-41039. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Quantum Router QN-I-470 6.1.1.B1. It has been declared as critical. This vulnerability affects an unknown code of the component API Endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality. CVE summarizes:

This vulnerability exists in Quantum Networks router due to improper access control and insecure default configuration in the web-based management interface. An unauthenticated attacker could exploit this vulnerability by accessing exposed API endpoints on the targeted device. Successful exploitation of this vulnerability could allow the attacker to access sensitive information, including internal endpoints, scripts and directories on the targeted device.

The weakness was disclosed by Rakesh Elamaran, Joel William A, Bajino Viju, Stalin S, Janish Andrin J and Kalpana B N. as CIVN-2026-0200. The advisory is shared for download at cert-in.org.in. This vulnerability was named CVE-2026-41039 since 04/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/21/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Router Operating System

Vendor

Quantum

Name

Router QN-I-470

Version

6.1.1.B1

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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2026 CVE reserved
04/21/2026 +5 days Advisory disclosed
04/21/2026 +0 days VulDB entry created
04/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: CIVN-2026-0200
Researcher: Rakesh Elamaran, Joel William A, Bajino Viju, Stalin S, Janish Andrin J, Kalpana B N.
Status: Not defined

CVE: CVE-2026-41039 (🔒)
GCVE (CVE): GCVE-0-2026-41039
GCVE (VulDB): GCVE-100-358432

Entryinfo

Created: 04/21/2026 13:16
Changes: 04/21/2026 13:16 (68)
Complete: 🔍
Cache ID: 216::103