Zero‑Day in Popular VPN Client Enables Lateral Movement Across Corporate Networks

Security researchers have uncovered a zero‑day flaw in a widely deployed VPN client that breaks tunnel isolation. By sending specially crafted packets to the client, an attacker can trigger remote code execution on any host that is actively connected to the VPN, effectively bypassing the client’s security boundary.

The vulnerability gives threat actors a foothold inside corporate networks, allowing them to move laterally, harvest credentials, and exfiltrate data without needing additional exploits. Defenders must prioritize immediate patching, enforce strict egress filtering, and monitor VPN traffic for anomalous packet patterns to mitigate the risk of widespread compromise.

Categories: Vulnerabilities & Exploits, Threat Intelligence

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