CVE-2025-5876Public exploitNetwork attack vector

Unauthenticated personnel and attendance record disclosure

Published Jun 9, 2025 · Updated Jun 9, 2025

Missing authentication in Lucky LM-520-SC, LM-520-FSC, and LM-520-FSC-SAM version 20250321 exposes personnel data to remote attackers. The embedded web interface serves department personnel information and downloadable attendance records without verifying a requester's identity. Network access to a terminal is sufficient, and the demonstrated consequence is unauthorized reading of employee and attendance data rather than record modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Lucky LM-520-SC, LM-520-FSC, and LM-520-FSC-SAM version 20250321 exposes personnel data to remote attackers. The embedded web interface serves department personnel information and downloadable attendance records without verifying a requester's identity. Network access to a terminal is sufficient, and the demonstrated consequence is unauthorized reading of employee and attendance data rather than record modification or service interruption.

The record

CVE
CVE-2025-5876
Published
Jun 9, 2025
Updated
Jun 9, 2025
Vendor
Lucky Technology Limited
Product
LM-520-FSC-SAM
Classifications
CWE-306, CWE-287, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 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?

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  1. Affected versionversion=20250321

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lucky Technology Limited · LM-520-FSC-SAMversion=20250321
Lucky Technology Limited · LM-520-SCversion=20250321
Lucky Technology Limited · LM-520-FSCversion=20250321

Published CVSS scores

5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.0VulDBAV:N/AC:L/Au:N/C:P/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-287Improper Authentication
T1005Data from Local System

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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