CVE-2022-43704Public exploitNetwork attack vector

Unauthenticated relay control via replayed UDP commands

Published Jan 20, 2023 · Updated Apr 2, 2025

Authentication bypass in Sinilink XY-WFT1 firmware 1.3.6 allows remote attackers to control its relay over UDP/1024. The device accepts replayed or crafted SINILINK521 state messages directly on UDP/1024 without verifying that they came from a trusted endpoint. Network access and the Manual Mode with Power On, Close configuration are required; relay manipulation can drive attached equipment toward an unsafe temperature.

CVSS severity5.9
Medium
EPSS probability1.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Sinilink XY-WFT1 firmware 1.3.6 allows remote attackers to control its relay over UDP/1024. The device accepts replayed or crafted SINILINK521 state messages directly on UDP/1024 without verifying that they came from a trusted endpoint. Network access and the Manual Mode with Power On, Close configuration are required; relay manipulation can drive attached equipment toward an unsafe temperature.

The record

CVE
CVE-2022-43704
Published
Jan 20, 2023
Updated
Apr 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-294
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.9CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-294Authentication Bypass by Capture-replay

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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