Vulnerability · Published Jun 4, 2026 · Assigned by Acer
CVE-2026-49186Lack of MQTT Broker Topic Access Control Lists
High 8.6
In plain English
A high-severity improper authentication in Connect M6E 5G Portable WiFi Router from Acer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.3%top 74.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Acer | Connect M6E 5G Portable WiFi Router | * – through M6E_AI_1.00.000019 |
Weakness: CWE-287 · Vector: 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