ASUS has released new firmware to patch a critical authentication bypass security flaw impacting several DSL series router models.

Tracked as CVE-2025–59367, this vulnerability allows remote, unauthenticated attackers to log into unpatched devices exposed online in low-complexity attacks that don’t require user interaction.

ASUS has released firmware version 1.1.2.3_1010 to address this vulnerability for DSL-AC51, DSL-N16, and DSL-AC750 router models.