What’s Vulnerable › Vulnerabilities
CVE-2025-55279: Hard-coded Private Key Vulnerability in ZKTeco WL20
- Severity: medium (CVSS 6.9 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-08-13 · updated 2026-06-17
- Weakness: CWE-798
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.
Affected products
- ZKTeco Co WL20 Biometric Attendance System: through ZLM31-FXO1-3.1.8
References
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