CVE-2025-4053

Building-wide lock access via cleartext card data

Published May 26, 2025 · Updated May 27, 2025

Cleartext storage in all Be-Tech Mifare Classic card systems allows physically proximate attackers to create building-wide master keys. Each guest card stores access-control data in cleartext, allowing its contents to be used to create a master key card. Physical possession of one hotel guest card is required, and the forged card unlocks every lock in the building.

CVSS severity6.8
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext storage in all Be-Tech Mifare Classic card systems allows physically proximate attackers to create building-wide master keys. Each guest card stores access-control data in cleartext, allowing its contents to be used to create a master key card. Physical possession of one hotel guest card is required, and the forged card unlocks every lock in the building.

The record

CVE
CVE-2025-4053
Published
May 26, 2025
Updated
May 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-312, CAPEC-37
Attack vector
physical
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 27, 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 vectorphysical
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8CERT.PLCVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
CAPEC-37Retrieve Embedded Sensitive Data

Public exploit references

No public exploit references are available in this record.

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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