CVE-2025-55279 Hard-coded Private Key Vulnerability in ZKTeco WL20
Attackers with physical access can extract hardcoded private keys from firmware to decrypt data and perform Man-in-the-Middle attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-55279?
CVE-2025-55279 is a medium-severity vulnerability in ZKTeco Co WL20 Biometric Attendance System, published on 13 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-798
Which versions are affected by CVE-2025-55279?
How do I fix CVE-2025-55279?
No fix has been published for CVE-2025-55279 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-55279 being exploited?
There is no known exploitation of CVE-2025-55279 in the wild and no public exploit code.
Sources
Also known as GHSA-rqpw-qjw3-j3g6.