CVE-2025-15387
Unknown Unknown - Not Provided

Insufficient Entropy in QNO VPN Firewall Enables Session Hijacking

Publication date: 2025-12-31

Last updated on: 2025-12-31

Assigner: TWCERT/CC

Description
VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.

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Meta Information

Published
2025-12-31
Last Modified
2025-12-31
Generated
2026-07-06
AI Q&A
2025-12-31
EPSS Evaluated
2026-07-05
NVD
CVE-2025-15387
EUVD
EUVD-2025-205903

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
qno_technology vpn_firewall 4.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-331 The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

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Executive Summary

This vulnerability is an Insufficient Entropy issue in the VPN Firewall developed by QNO Technology. It allows unauthenticated remote attackers to perform brute-force attacks to obtain any logged-in user session and then log into the system without authorization.

Impact Analysis

The vulnerability can allow attackers to gain unauthorized access to user sessions by brute-forcing session information, potentially leading to full system access and compromise of sensitive data or network resources.

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