CVE-2022-43704: The Sinilink XY-WFT1 WiFi Remote Thermostat, running firmware 1.3.6, allows an attacker to bypass the intended

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MEDIUM 5.9REMOTEMITIGATE

CVE-2022-43704 is a medium-severity flaw (CVSS 5.9) affecting xy-wft1 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Sinilink XY-WFT1 WiFi Remote Thermostat, running firmware 1.3.6, allows an attacker to bypass the intended requirement to communicate using MQTT. It is possible to replay Sinilink aka SINILINK521 protocol (udp/1024) commands interfacing directly with the target device. This, in turn, allows for an attack to control the onboard relay without requiring authentication via the mobile application. This might result in an unacceptable temperature w

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-294
Published	2023-01-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sinilink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-01-20 17:15 UTCPublished CVE record published
2026-06-17 05:07 UTCUpdated Record last modified

sinilink xy-wft1 firmware MITIGATE

Affected: 1.3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.6

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-43704?

xy-wft1 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-43704 being exploited?

CVE-2022-43704 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-43704 affect?

CVE-2022-43704 affects xy-wft1 firmware. Severity is medium (CVSS 5.9). The Sinilink XY-WFT1 WiFi Remote Thermostat, running firmware 1.3.6, allows an attacker to bypass the intended requirement to communicate using MQTT. It is possible to replay Sinilink aka SINILINK521 protocol (udp/1024) commands interfacing

How urgent is CVE-2022-43704?

Priority 50/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Wi-Fi vulnerabilities

References

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