CVE-2025-55279 — Hard-coded Private Key Vulnerability in ZKTeco WL20

CVE-2025-55279

Hard-coded Private Key Vulnerability in ZKTeco WL20 PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
ZKTeco Co / WL20 Biometric Attendance System	affected <=ZLM31-FXO1-3.1.8

CWE

CWE-798

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2025-0172

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.