CVE-2026-9997-VPN-Split-Tunneling-Bypass-via-DHCP-Option-Injection

CVE-2026-9997 – 通过 DHCP 选项注入绕过 VPN 分流隧道 程序代码（Python 模拟 DHCP 服务器 + 客户端） !/usr/bin/env python3 roguedhcpserver.py - Injects a static route to bypass VPN split tunnel import socket, struct, threading def senddhcpofferclientmac, offerip: Craft a DHCP OFFER packet with Option 121 Classless Static Rout...

CLSA-2025-1764322970 NetworkManager: Fix of CVE-2024-3661

CVE-2024-3661: fix TunnelVision vulnerability by preventing DHCP option 121 route manipulation that could bypass VPN encryption and leak traffic...

GHSA-HQMP-G7PH-X543 TunnelVision - decloaking VPNs using DHCP

A new decloaking technique for nearly all VPN implementations has been found, which allows attackers to inject entries into the routing tables of unsuspecting victims using DHCP option 121. This allows attackers to redirect traffic, which is supposed to be sent encrypted over the VPN, through the...

New TunnelVision Attack Allows Hijacking of VPN Traffic via DHCP Manipulation

Researchers have detailed a Virtual Private Network VPN bypass technique dubbed TunnelVision that allows threat actors to snoop on victim's network traffic by just being on the same local network. The "decloaking" method has been assigned the CVE identifier CVE-2024-3661 CVSS score: 7.6. It impac...