Vulnerability record · CVE-2026-41039 · published 21 April 2026

CVE-2026-41039: Qntmnet qn-i-470 firmware missing authentication for critical function vulnerability

Qntmnet · Qn I 470 Firmware

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.

8.7 CVSS 4.0 High EPSS 0.45% · top 63.6% CWE-306 · Missing authentication for critical function

8.7CVSS 4.0 base score

0.45%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

1References

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Qn I 470 Firmware Qntmnet

References

Link	Tags
https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0200	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-41036Qntmnet qn-i-470 firmware os command injection vulnerabilityThis vulnerability exists in Quantum Networks router due to inadequate sanitization of user-supplied input in the management CLI interface. An authen…EPSS 0.81%21 Apr 2026 8.7CVE-2026-41037Qntmnet qn-i-470 firmware improper restriction of authentication attempts vulnerabilityThis vulnerability exists in Quantum Networks router due to missing rate limiting and CAPTCHA protection for failed login attempts in the web-based m…EPSS 0.32%21 Apr 2026 7.6CVE-2026-41038Qntmnet qn-i-470 firmware weak password requirements vulnerabilityThis vulnerability exists in Quantum Networks router due to lack of enforcement of strong password policies in the web-based management interface. An…EPSS 0.28%21 Apr 2026 8.8CVE-2026-67277MikroTik RouterOS btest missing authentication leaks kernel memory and crashes kernelRouterOS accepts a "related" btest connection before the primary session is authenticated, letting an unauthenticated client start an IPv4 UDP test. …KEVEPSS 1.6%analysed5 Sep 2026 8.8CVE-2026-59822LiteLLM MCP endpoint auth bypass via OAuth2 passthrough fallbackLiteLLM's MCP Streamable HTTP endpoint, prior to 1.84.0, let an unauthenticated attacker send a fabricated Authorization header that triggered an OAu…KEVEPSS 0.84%analysed8 Jul 2026 9.3CVE-2026-72529TrueConf Server missing authentication allows remote script executionTrueConf Server versions 5.3.X through 5.3.9, 5.4.X through 5.4.9, 5.5.X through 5.5.5, and earlier expose an undocumented function on port 4307/TCP …KEVEPSS 1.5%analysed19 Aug 2026 9.8CVE-2026-46817Oracle E-Business Suite Payments missing authentication allows takeoverOracle Payments in Oracle E-Business Suite 12.2.3 through 12.2.15 contains an easily exploitable flaw in the File Transmission component. An unauthen…KEVEPSS 0.81%analysed28 May 2026 9.8CVE-2026-56164Microsoft SharePoint Server missing authentication allows privilege elevationMicrosoft Office SharePoint Server contains a missing authentication flaw in a critical function (CWE-306), letting an unauthenticated attacker reach…KEVEPSS 1.0%analysed14 Jul 2026

Source: NIST National Vulnerability Database (record CVE-2026-41039), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.