SB2026060496 - Multiple vulnerabilities in Acer Connect W6x Router

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Main Vulnerability Database SB2026060496

SB2026060496 - Multiple vulnerabilities in Acer Connect W6x Router

Published: June 4, 2026

Security Bulletin ID SB2026060496
CSH Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 60% Low 40%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Missing Authentication for Critical Function (CVE-ID: N/A)

CWE-ID: CWE-306 - Missing Authentication for Critical Function

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise the device.

The vulnerability exists due to missing authentication in the debugging interface /sbin/mtk_dut on TCP port 9000 when handling LAN-based connections. A remote attacker can connect to the exposed debug service to compromise the device.

The issue is reachable from the local network.


2) Command injection (CVE-ID: N/A)

CWE-ID: CWE-77 - Command injection

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to execute arbitrary commands.

The vulnerability exists due to command injection in the Wi-Fi device blocking feature within the Web Admin Panel when processing MAC address fields. A remote privileged user can submit a specially crafted MAC address value to execute arbitrary commands.


3) Improper Authentication (CVE-ID: N/A)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to improper authentication in endpoints serving the Acer Connect application when processing malformed HTTP Authorization headers. A remote attacker can send a malformed authorization header to bypass authentication.


4) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the local MQTT messaging broker when handling wildcard topic subscriptions. A remote user can subscribe to wildcard topics to disclose sensitive information.


5) Command injection (CVE-ID: N/A)

CWE-ID: CWE-77 - Command injection

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to command injection in the MQTT broker processing logic when processing incoming messaging strings. A remote attacker can send a specially crafted MQTT payload to execute arbitrary code.


Remediation

Install update from vendor's website.

References