CVE-2026-49186: CWE-287: Improper Authentication in Acer Connect M6E 5G Portable WiFi Router
CVE-2026-49186 is a high-severity vulnerability in the Acer Connect M6E 5G Portable WiFi Router. The local MQTT broker on the device does not enforce topic-level Access Control Lists (ACLs), allowing any authenticated client to subscribe with wildcard characters to discover hidden network devices or publish unauthorized control commands. This improper authentication weakness could lead to unauthorized network reconnaissance and manipulation of device functions. There is no official patch or remediation level currently available from the vendor. The vulnerability requires high privileges to exploit but does not require user interaction. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-49186 affects the Acer Connect M6E 5G Portable WiFi Router. It stems from improper authentication (CWE-287) in the local MQTT broker component, which fails to enforce topic-level ACLs. This allows clients with high privileges to use MQTT wildcard subscriptions (# or +) to enumerate hidden network devices or send rogue control commands to the router. The CVSS 4.0 base score is 8.6, indicating a high severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. No patch or official remediation guidance is currently provided by Acer, and the device is not a cloud service, so remediation depends on vendor updates.
Potential Impact
Successful exploitation allows an attacker with high privileges to enumerate hidden network devices and send unauthorized control commands via the MQTT broker, potentially compromising network confidentiality, integrity, and availability. This could lead to unauthorized network reconnaissance and manipulation of router functions. The vulnerability does not require user interaction but does require high privileges on the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided by Acer, users should monitor for vendor updates. Until a fix is available, restrict access to the router's MQTT broker to trusted clients only and consider disabling MQTT features if possible to reduce exposure.
CVE-2026-49186: CWE-287: Improper Authentication in Acer Connect M6E 5G Portable WiFi Router
Description
CVE-2026-49186 is a high-severity vulnerability in the Acer Connect M6E 5G Portable WiFi Router. The local MQTT broker on the device does not enforce topic-level Access Control Lists (ACLs), allowing any authenticated client to subscribe with wildcard characters to discover hidden network devices or publish unauthorized control commands. This improper authentication weakness could lead to unauthorized network reconnaissance and manipulation of device functions. There is no official patch or remediation level currently available from the vendor. The vulnerability requires high privileges to exploit but does not require user interaction. No known exploits are reported in the wild at this time.
CVSS v4.0
Score 8.6high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-49186 affects the Acer Connect M6E 5G Portable WiFi Router. It stems from improper authentication (CWE-287) in the local MQTT broker component, which fails to enforce topic-level ACLs. This allows clients with high privileges to use MQTT wildcard subscriptions (# or +) to enumerate hidden network devices or send rogue control commands to the router. The CVSS 4.0 base score is 8.6, indicating a high severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. No patch or official remediation guidance is currently provided by Acer, and the device is not a cloud service, so remediation depends on vendor updates.
Potential Impact
Successful exploitation allows an attacker with high privileges to enumerate hidden network devices and send unauthorized control commands via the MQTT broker, potentially compromising network confidentiality, integrity, and availability. This could lead to unauthorized network reconnaissance and manipulation of router functions. The vulnerability does not require user interaction but does require high privileges on the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided by Acer, users should monitor for vendor updates. Until a fix is available, restrict access to the router's MQTT broker to trusted clients only and consider disabling MQTT features if possible to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Acer
- Date Reserved
- 2026-05-28T02:46:15.560Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a20f595e29bf47b505f23d9
Added to database: 6/4/2026, 3:48:37 AM
Last enriched: 6/4/2026, 4:03:27 AM
Last updated: 6/4/2026, 5:15:17 AM
Views: 4
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