What’s Vulnerable › Vulnerabilities
CVE-2026-49186: Lack of MQTT Broker Topic Access Control Lists
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-04 · updated 2026-07-22
- Weakness: CWE-287
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
- Acer Connect M6E 5G Portable WiFi Router: through m6e_ai_1.00.000019
References
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