ASUS warns of critical auth bypass flaw in routers using AiCloud

The vulnerability discovered in AiCloud impacts a broad range of models, with ASUS releasing fixes for multiple firmware branches, including 3.0.0.4_382 series, 3.0.0.4_386 series, 3.0.0.4_388 series, and 3.0.0.6_102 series. It allows users to access files stored on USB drives connected to the router from anywhere over the internet, stream media remotely, sync files between home networks and other cloud storage services, and share files with others via links. "An improper authentication control vulnerability exists in certain ASUS router firmware series," reads the vendor's bulletin. ASUS is warning about an authentication bypass vulnerability in routers with AiCloud enabled that could allow remote attackers to perform unauthorized execution of functions on the device. ASUS also advises users to use distinct passwords to secure their wireless network and router administration page, and make sure they're at least 10 characters long with a mix of letters, numbers, and symbols. Impacted users of end-of-life products are advised to disable AiCloud entirely and turn off internet access for WAN, port forwarding, DDNS, VPN server, DMZ, port triggering, and FTP services. Users are recommended to upgrade to the latest firmware version available for their model, which they can find on the vendor's support portal or the product finder page. Therefore, it is strongly advised that ASUS router users upgrade to the latest firmware as soon as possible. AiCloud is a cloud-based remote access feature built into many ASUS routers, turning them into mini private cloud servers. Bill Toulas Bill Toulas is a tech writer and infosec news reporter with over a decade of experience working on various online publications, covering open-source, Linux, malware, data breach incidents, and hacks. The vulnerability, tracked under CVE-2025-2492 and rated critical (CVSS v4 score: 9.2), is remotely exploitable via a specially crafted request and requires no authentication, making it particularly dangerous. While there are no reports of active exploitation or a public proof-of-concept exploit for CVE-2025-2492, attackers commonly target these flaws to infect devices with malware or recruit them into DDoS swarms.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Fri, 18 Apr 2025 16:10:29 +0000

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