Acer Router Security Flaws Earn Maximum 10.0 CVSS Scores

Serious Flaws Found in Acer Wave 7 Devices

Acer has officially acknowledged severe system issues within its networking hardware line. Specifically, researchers discovered dangerous Acer router security flaws impacting the popular Wave 7 models. In fact, these flaws focus primarily on access control vulnerabilities and broken cryptographic defenses. Currently, the vendor is actively engineering an emergency firmware update to eliminate these risks. To protect local networks, users must prepare to update their systems immediately upon release. Consequently, this bulletin covers hardware running firmware version T7c_GBL_1.01.000055 or earlier.

Deconstructing the Critical Vulnerabilities

Exposed Cleartext Credential Logs

To begin with, the first flaw tracks globally as CVE-2026-49200. An unauthenticated attacker can easily read a specific internal system log via the web panel. Specifically, the acer_cgi.log file remains fully exposed without any identity checks. Unfortunately, this plain document contains cleartext administrative passwords for both web and Telnet portals. Therefore, malicious actors can exploit this data to seize control of the device.

Hardcoded Cryptographic Backdoor Encryption Keys

In addition, the second flaw involves a hardcoded cryptographic key tracking as CVE-2026-49201. The system’s backup processing binary contains a static AES encryption key. Consequently, an attacker can decrypt, modify, and re-encrypt router backups easily. This manipulation facilitates a persistent backdoor injection into the hardware. Both Acer router security flaws carry an absolute maximum CVSS severity score of 10.0.

Mitigation Actions and Update Schedules

Fortunately, the software provider plans to deploy official patches for these critical firmware bugs by the end of June 2026. Meanwhile, administrators can update their hardware using a few simple steps. First, connect a computer directly to the router using a Wi-Fi or Ethernet connection. Second, open a standard web browser to navigate to the console endpoint at 192.168.76.1 or acerconnect.com. Third, log in with admin privileges and check for pending updates under System Management. Ultimately, maintaining modern firmware versions remains the most effective defense against edge routing exploitation.