Hard-coded Private Key Vulnerability in ZKTeco WL20
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ZKTeco Co | WL20 Biometric Attendance System | unaffected |
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No data available yet.
Vendor Workaround
* Apply mitigations as per vendor instructions (whenever available) or discontinue the use of the product if mitigations are unavailable. * Perform risk assessment and implement physical security controls to prevent unauthorized access to the device.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-24556 | 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. |
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.190% probability within 30 days)
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | Hard-coded Private Key Vulnerability in ZKTeco WL20 | |
| Weaknesses | CWE-798 | |
| References |
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| Metrics |
cvssV4_0
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