CVE-2024-48546Public exploit

Firmware disclosure via unauthenticated update requests

Published Oct 24, 2024 · Updated Oct 24, 2024

Incorrect authorization in Shenzhen Yingsheng Technology Co. Wear Sync 1.2.0 allows attackers to retrieve firmware via unauthenticated requests. OtaCheckViewModel$checkDeviceFwUpdate$1 and DeviceService expose request parameters in the APK, and the server returns firmware download URLs without authenticating or authorizing the requests. Exploitation requires APK analysis and a compatible HAYLOU device to recover deviceId, projectNo, and versionNo values; the confirmed consequence is complete firmware disclosure for offline analysis.

CVSS severity8.4
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Shenzhen Yingsheng Technology Co. Wear Sync 1.2.0 allows attackers to retrieve firmware via unauthenticated requests. OtaCheckViewModel$checkDeviceFwUpdate$1 and DeviceService expose request parameters in the APK, and the server returns firmware download URLs without authenticating or authorizing the requests. Exploitation requires APK analysis and a compatible HAYLOU device to recover deviceId, projectNo, and versionNo values; the confirmed consequence is complete firmware disclosure for offline analysis.

The record

CVE
CVE-2024-48546
Published
Oct 24, 2024
Updated
Oct 24, 2024
Vendor
Shenzhen Yingsheng Technology Co.
Product
Wear Sync
Classifications
CWE-863
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Shenzhen Yingsheng Technology Co. · Wear Syncversion=1.2.0

Published CVSS scores

8.4NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

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Technologies

Your stack

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Your stack

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