CVE-2025-55279CWE-798

Hard-coded Private Key Vulnerability in ZKTeco WL20

Medium · published August 13, 2025

CVSS v4.0
6.9
EPSS
0%
Percentile
6.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
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
EPSS
0.00174 · 6.5th percentile
Weakness
CWE-798 · Use of Hard-coded Credentials
Published
2025-08-13T11:23Z
EPSS history
Timeline
  • 13 AUG 11:23Z
    Hard-coded Private Key Vulnerability in ZKTeco WL20
    cvelistv5