by Kastro
Paper/Archive/CVE-2026-50085

CVE-2026-50085

Aqara Board service — Aqara Board IoT insecure debug API

EPSS 0.4%public exploitCVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 35.4.354 × 207.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

The Aqara Board service (op-test.aqara.com) accepts arbitrary MQTT command payloads, and forwards them to the platfom's HiveMQ broker without authentication. This is an instance of "CWE-306: Missing Authentication for Critical Function" and has an estimated CVSS ofCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L (8.6 High). When combined with CVE-2026-50082, CVE-50083, and CVE-50084, this can lead to a fully unauthenticated, remote takeover of affected devices.

Affected

ProductAffectedFixed inSource
Board service2026-04-20 – < 00CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
runZero (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

exploitgithub.com/xn0tsa/theres-no-place-like-homewriteuprunzero.com/advisories/aqara-board-iot-insecure-debug-api-cve-2026-50085