Cisco has addressed a critical vulnerability in its IOS XE Software for Wireless LAN Controllers, identified as CVE-2025-20188, which allows unauthenticated attackers to hijack devices due to a hard-coded JSON Web Token. Although the flaw is potent, it is only exploitable if the 'Out-of-Band AP Image Download' feature is enabled, which is not the default setting. Administrators are urged to apply security updates immediately to mitigate the risk.