Unit 42 Reveals AirSnitch Attacks Bypassing WPA2/3 Wi-Fi Encryption
Palo Alto Networks' Unit 42 has disclosed a novel set of attack techniques named AirSnitch, which effectively bypass standard Wi-Fi encryption protocols like WPA2 and WPA3-Enterprise. Presented at the NDSS Symposium 2026, this research highlights critical vulnerabilities in how wireless infrastructure handles low-level network states, such as MAC address tables. By exploiting these design flaws, attackers can subvert client isolation mechanisms to intercept traffic or inject packets, thereby breaking the cryptographic barrier that protects enterprise data. The vulnerability affects devices from major vendors and operating systems including Android, iOS, Windows, and Linux. Unlike traditional attacks targeting specific clients, AirSnitch exploits the interaction between protocol and infrastructure, enabling Man-in-the-Middle capabilities across different network segments. Due to the fundamental nature of these security gaps, which are difficult to patch via existing standards, Unit 42 urges enterprises to adopt rigorous network segmentation, enhance spoofing prevention, and update firewall configurations. This disclosure aims to accelerate mitigation efforts against threats that compromise both wired and wireless enterprise environments, challenging the long-held assumption that WPA encryption provides robust protection.
Wire timeline
Unit 42 Reveals AirSnitch Attacks Bypassing WPA2/3 Wi-Fi Encryption
Palo Alto Networks' Unit 42 has disclosed a novel set of attack techniques named AirSnitch, which effectively bypass standard Wi-Fi encryption protocols like WPA2 and WPA3-Enterprise. Presented at the NDSS Symposium 2026, this research highlights critical vulnerabilities in how wireless infrastructure handles low-level network states, such as MAC address tables. By exploiting these design flaws, attackers can subvert client isolation mechanisms to intercept traffic or inject packets, thereby breaking the cryptographic barrier that protects enterprise data. The vulnerability affects devices from major vendors and operating systems including Android, iOS, Windows, and Linux. Unlike traditional attacks targeting specific clients, AirSnitch exploits the interaction between protocol and infrastructure, enabling Man-in-the-Middle capabilities across different network segments. Due to the fundamental nature of these security gaps, which are difficult to patch via existing standards, Unit 42 urges enterprises to adopt rigorous network segmentation, enhance spoofing prevention, and update firewall configurations. This disclosure aims to accelerate mitigation efforts against threats that compromise both wired and wireless enterprise environments, challenging the long-held assumption that WPA encryption provides robust protection.
Unit 42