Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:N) | Network: reachable remotely |
| Attack complexity (AC:L) | Low complexity |
| Privileges required (PR:N) | No privileges required |
| User interaction (UI:N) | No user interaction |
| Scope (S:U) | Scope unchanged |
| Confidentiality (C:L) | Low confidentiality impact |
| Integrity (I:H) | High integrity impact |
| Availability (A:L) | Low availability impact |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
About Aqara Board Service
CVE-2026-50085 affects Aqara Board Service, a product from Aqara. Before acting, confirm where Aqara Board Service runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: 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.
The weakness class is Missing Authentication. A critical function can be used without logging in.
Based on its CVSS vector, the flaw can be reached over the network, needs no login, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Aqara Board Service |
| Affected versions | Board Service 2026-04-20 |
| Published | Jun 12, 2026 |
| Last modified | Jul 9, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | 44488dab-36db-4358-99f9-bc116477f914 |
How to detect it
- Inventory every instance of Aqara Board Service and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Aqara Board Service named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Aqara Board Service to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
- CWE-306: Missing Authentication More CVEs with this weakness
Technical References
Frequently asked questions
Related CVEs
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