by Kastro
Paper/Archive/CVE-2026-49186

CVE-2026-49186

Acer Connect M6E 5G Portable WiFi Router — Lack of MQTT Broker Topic Access Control Lists

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
34
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 25.0.250 × 205.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Connect M6E 5G Portable WiFi Router≤ M6E_AI_1.00.000019–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Acer (CNA)8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refcommunity.acer.com/en/kb/articles/19707