CVE-2025-54464

Cleartext Storage Vulnerability in ZKTeco WL20

Published Aug 13, 2025 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
This vulnerability exists in ZKTeco WL20 due to storage of admin and user credentials without encryption in the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and reverse engineer the binary data to access the unencrypted credentials stored in the firmware of targeted device.

Remediation

Vendor Solution

Upgrade ZKTeco WL20 Biometric Attendance System firmware to version ZLM31-FXO1-4.0.3. https://www.zkteco.com/en/Security_Bulletinsibs/20

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-24558 This vulnerability exists in ZKTeco WL20 due to storage of admin and user credentials without encryption in the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and reverse engineer the binary data to access the unencrypted credentials stored in the firmware of targeted device.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description This vulnerability exists in ZKTeco WL20 due to storage of admin and user credentials without encryption in the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and reverse engineer the binary data to access the unencrypted credentials stored in the firmware of targeted device.
Title Cleartext Storage Vulnerability in ZKTeco WL20
Weaknesses CWE-312
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
CERT-In
Published
Updated
Aug 13, 2025, 1:10 PM
Reserved
Jul 22, 2025, 8:56 AM
Status
Deferred
Published
Aug 13, 2025, 12:15 PM
Modified
Jun 17, 2026, 9:40 AM