By Teri Robinson
Publication Date: 2026-02-02 08:55:00
A wireless vulnerability affecting Broadcom Wi-Fi chipsets represents a timely warning for organizations that need always-on wireless access and a prime example of how easy it is for one bad actor to upset the apple cart for every user connected to a network.
“The vulnerability can be exploited by sending a single frame over the air to the router within range, regardless of the configured network security level. The immediate effect is the loss of connection for all clients on the 5 GHz network, preventing reconnection until the router is manually restarted. This includes guest networks as well,” according to Black Duck researchers who discovered the vulnerability. “Ethernet connections and the 2.4 GHz network remain unaffected. After the restart, the attacker can immediately repeat the attack.”
Black Duck’s CyRC team spotted the flaw during fuzz testing when they found Defensics anomaly test cases in which the network would stop working and require a…