Cisco admins are scrambling to patch a critical flash memory overflow vulnerability in over 200 Cisco Systems IOS XE-based models of wireless access points (APs), caused by a recent flawed software update. If the issue is not corrected quickly, the AP’s memory will become so flooded that new software updates will be blocked and the AP rendered insecure, or possibly even bricked. The problematic library update causes a specific log file in the flash memory of affected access points to grow by about 5MB a day. Over time, Cisco said in an advisory this week, this could consume “a big portion” of the available memory space. “The longer an AP runs the affected software, the higher the probability...