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CVE-2025-55280 (GCVE-0-2025-55280)

Vulnerability from cvelistv5 – Published: 2025-08-13 11:38 – Updated: 2025-08-13 12:59

Title

Information Disclosure Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to storage of Wi-Fi credentials, configuration data and system data in plaintext within 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 plaintext sensitive data stored in the targeted device. Successful exploitation of this vulnerability could allow the attacker to gain unauthorized network access, retrieve and manipulate data on the targeted device.

Severity ?

5.2 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

CWE

CWE-312 - Cleartext Storage of Sensitive Information

Assigner

CERT-In

References

URL

Tags

https://www.cert-in.org.in/s2cMainServlet?pageid=…

third-party-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-55279 (GCVE-0-2025-55279)

Vulnerability from cvelistv5 – Published: 2025-08-13 11:23 – Updated: 2025-08-13 13:01

Title

Hard-coded Private Key Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to hard-coded private key stored in plaintext within the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and analyzing the binary data to retrieve private key stored in the firmware of the targeted device. Successful exploitation of this vulnerability could allow the attacker to perform unauthorized decryption of sensitive data and Man-in-the-Middle (MitM) attacks on the targeted device.

Severity ?

6.9 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

CERT-In

References

URL

Tags

https://www.cert-in.org.in/s2cMainServlet?pageid=…

third-party-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-54465 (GCVE-0-2025-54465)

Vulnerability from cvelistv5 – Published: 2025-08-13 11:17 – Updated: 2025-08-13 13:09

Title

Hard-coded Credentials Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to hard-coded MQTT credentials and endpoints stored in plaintext within the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and analyzing the binary data to retrieve the hard-coded MQTT credentials and endpoints from the targeted device. Successful exploitation of this vulnerability could allow the attacker to gain unauthorized access to the MQTT broker and manipulate the communications of the targeted device.

Severity ?

6.8 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

CERT-In

References

URL

Tags

	https://www.cert-in.org.in/s2cMainServlet?pageid=…	third-party-advisory
	https://www.zkteco.com/en/Security_Bulletinsibs/20	vendor-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-54464 (GCVE-0-2025-54464)

Vulnerability from cvelistv5 – Published: 2025-08-13 11:12 – Updated: 2025-08-13 13:10

Title

Cleartext Storage Vulnerability in ZKTeco WL20

Summary

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.

Severity ?

7 (High)


                        
                          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

CWE

CWE-312 - Cleartext Storage of Sensitive Information

Assigner

CERT-In

References

URL

Tags

	https://www.cert-in.org.in/s2cMainServlet?pageid=…	third-party-advisory
	https://www.zkteco.com/en/Security_Bulletinsibs/20	vendor-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-55280 (GCVE-0-2025-55280)

Vulnerability from nvd – Published: 2025-08-13 11:38 – Updated: 2025-08-13 12:59

Title

Information Disclosure Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to storage of Wi-Fi credentials, configuration data and system data in plaintext within 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 plaintext sensitive data stored in the targeted device. Successful exploitation of this vulnerability could allow the attacker to gain unauthorized network access, retrieve and manipulate data on the targeted device.

Severity ?

5.2 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

CWE

CWE-312 - Cleartext Storage of Sensitive Information

Assigner

CERT-In

References

URL

Tags

https://www.cert-in.org.in/s2cMainServlet?pageid=…

third-party-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-55279 (GCVE-0-2025-55279)

Vulnerability from nvd – Published: 2025-08-13 11:23 – Updated: 2025-08-13 13:01

Title

Hard-coded Private Key Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to hard-coded private key stored in plaintext within the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and analyzing the binary data to retrieve private key stored in the firmware of the targeted device. Successful exploitation of this vulnerability could allow the attacker to perform unauthorized decryption of sensitive data and Man-in-the-Middle (MitM) attacks on the targeted device.

Severity ?

6.9 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

CERT-In

References

URL

Tags

https://www.cert-in.org.in/s2cMainServlet?pageid=…

third-party-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-54465 (GCVE-0-2025-54465)

Vulnerability from nvd – Published: 2025-08-13 11:17 – Updated: 2025-08-13 13:09

Title

Hard-coded Credentials Vulnerability in ZKTeco WL20

Summary

This vulnerability exists in ZKTeco WL20 due to hard-coded MQTT credentials and endpoints stored in plaintext within the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and analyzing the binary data to retrieve the hard-coded MQTT credentials and endpoints from the targeted device. Successful exploitation of this vulnerability could allow the attacker to gain unauthorized access to the MQTT broker and manipulate the communications of the targeted device.

Severity ?

6.8 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

CERT-In

References

URL

Tags

	https://www.cert-in.org.in/s2cMainServlet?pageid=…	third-party-advisory
	https://www.zkteco.com/en/Security_Bulletinsibs/20	vendor-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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CVE-2025-54464 (GCVE-0-2025-54464)

Vulnerability from nvd – Published: 2025-08-13 11:12 – Updated: 2025-08-13 13:10

Title

Cleartext Storage Vulnerability in ZKTeco WL20

Summary

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.

Severity ?

7 (High)


                        
                          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

CWE

CWE-312 - Cleartext Storage of Sensitive Information

Assigner

CERT-In

References

URL

Tags

	https://www.cert-in.org.in/s2cMainServlet?pageid=…	third-party-advisory
	https://www.zkteco.com/en/Security_Bulletinsibs/20	vendor-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Co	WL20 Biometric Attendance System	Affected: <=ZLM31-FXO1-3.1.8

Credits

This vulnerability is reported by Shravan Singh from Kavach IoT Security.

Show details on NVD website

JSON

To clipboard

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Search criteria

8 vulnerabilities found for WL20 Biometric Attendance System by ZKTeco Co

CVE-2025-55280 (GCVE-0-2025-55280)

CVE-2025-55279 (GCVE-0-2025-55279)

CVE-2025-54465 (GCVE-0-2025-54465)

CVE-2025-54464 (GCVE-0-2025-54464)

CVE-2025-55280 (GCVE-0-2025-55280)

CVE-2025-55279 (GCVE-0-2025-55279)

CVE-2025-54465 (GCVE-0-2025-54465)

CVE-2025-54464 (GCVE-0-2025-54464)