CVE-2026-49186
Lack of MQTT Broker Topic Access Control Lists
- State
- Published
- Severity
- 8.6 High
- Published
- Jun 4, 2026
- Updated
- Jun 4, 2026
- Reserved
- May 28, 2026
Description
The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | 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 | Acer |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
Connect M6E 5G Portable WiFi RouterAcer |
|
References
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