CVE-2025-15387CWE-331

QNO Technology|VPN Firewall - Insufficient Entropy

High · published December 31, 2025

CVSS v4.0
8.7
EPSS
0%
Percentile
29.4
In the wild
Unconfirmed
What it is

⚡ An insufficient entropy issue in QNO Technology's VPN Firewall could let attackers crack user sessions like a kid opening birthday presents! 🎉 Think of it like a vault with a combination lock that has way too few digits — a determined thief could guess it in no time, gaining access to everything inside. This vulnerability allows attackers to brute-force their way into logged-in user sessions, making it alarmingly easy for them to impersonate legitimate users. If exploited, an attacker could waltz right into the system, hijacking user sessions and potentially gaining unauthorized access to sensitive data or system controls. This could lead to a catastrophic breach, compromising user privacy and security. Imagine the chaos of someone else controlling your account — it's absolutely devastating!

Put simply

Think of it like a vault with a combination lock that has way too few digits — a determined thief could guess it in no time, gaining access to everything inside. This vulnerability allows attackers to brute-force their way into logged-in user sessions, making it alarmingly easy for them to impersonate legitimate users. This weakness stems from insufficient randomness in session tokens, enabling unauthenticated remote attackers to execute brute-force attacks and gain access to active user sessions.

What to do

If exploited, an attacker could waltz right into the system, hijacking user sessions and potentially gaining unauthorized access to sensitive data or system controls. This could lead to a catastrophic breach, compromising user privacy and security. Imagine the chaos of someone else controlling your account — it's absolutely devastating! To mitigate this vulnerability, update your VPN Firewall to the latest version immediately and ensure that session tokens have sufficient entropy. Regularly review your security practices and consider implementing account lockout mechanisms after too many failed login attempts. You’ve got this! Follow these steps to safeguard your VPN and keep those pesky intruders at bay! 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00367 · 29.4th percentile
Weakness
CWE-331 · Insufficient Entropy
Published
2025-12-31T08:23Z
EPSS history
Timeline
  • 31 DEC 08:23Z
    QNO Technology|VPN Firewall - Insufficient Entropy
    cvelistv5