CVE-2025-15387

HIGH

QNO Technology VPN Firewall - Unauthenticated Session Hijacking via Insufficient Entropy

Title source: llm

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.

References (2)

Core 2

Core References

Various Sources third-party-advisory

https://www.twcert.org.tw/tw/cp-132-10613-e1780-1.html

Various Sources third-party-advisory

https://www.twcert.org.tw/en/cp-139-10614-dee41-2.html

Scores

CVSS v3 8.8

EPSS 0.0031

EPSS Percentile 22.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-331

Status published

Products (1)

QNO Technology/VPN Firewall

Published Dec 31, 2025

Tracked Since Feb 18, 2026