CVE-2025-54464— Cleartext Storage Vulnerability in ZKTeco WL20
Quick assessment
Affected
ZKTeco Co WL20 Biometric Attendance System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ZKTeco WL20是中国熵基科技（ZKTeco）公司的一款智能指纹考勤机。 ZKTeco WL20存在安全漏洞，该漏洞源于设备固件中存储了未加密的管理员和用户凭据，可能导致物理访问攻击者提取固件并逆向工程获取凭据。
Possible ATT&CK Techniques 3 AI
T1056 · Input Capture T1005 · Data from Local System T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-54464
Vulnerability Information
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Vulnerability Title
Cleartext Storage Vulnerability in ZKTeco WL20
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文存储
Source: CVE Program / CVE List V5
Vulnerability Title
ZKTeco WL20 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZKTeco WL20是中国熵基科技（ZKTeco）公司的一款智能指纹考勤机。 ZKTeco WL20存在安全漏洞，该漏洞源于设备固件中存储了未加密的管理员和用户凭据，可能导致物理访问攻击者提取固件并逆向工程获取凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ZKTeco Co | WL20 Biometric Attendance System | <=ZLM31-FXO1-3.1.8 | - |
|
II. Public POCs for CVE-2025-54464
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-54464 (1)
-
https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2025-0172 third-party-advisory
Other References for CVE-2025-54464 (1)
-
https://www.zkteco.com/en/Security_Bulletinsibs/20 vendor-advisory
Same Patch Batch · ZKTeco Co · 2025-08-13 · 4 CVEs total
| CVE-2025-55279 | Hard-coded Private Key Vulnerability in ZKTeco WL20 | |
| CVE-2025-54465 | Hard-coded Credentials Vulnerability in ZKTeco WL20 | |
| CVE-2025-55280 | Information Disclosure Vulnerability in ZKTeco WL20 |
IV. Related Vulnerabilities
Same weakness: CWE-312
-
CVE-2026-93763
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CVE-2026-93764
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CVE-2026-63406
AnyCable: Telemetry Subsystem Contains Hardcoded Authenticat -
CVE-2026-81321
CareCam CM2507 Cleartext Storage of Sensitive Information -
CVE-2026-44940
Service token exposure and potential privilege escalation in
V. Comments for CVE-2025-54464
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