CVE-2023-53739
CWE-260Published: December 9, 2025· Updated: Jun 17, 2026
Official Description
Tinycontrol LAN Controller v3 LK3 version 1.58a contains an unauthenticated vulnerability that allows remote attackers to download configuration backup files containing sensitive credentials. Attackers can retrieve the lk3_settings.bin file and extract base64-encoded user and admin passwords without authentication.
Risk Analysis
Tinycontrol LAN Controller v3 contains an unauthenticated vulnerability that allows remote attackers to download configuration backups. This exposes sensitive credentials, including admin passwords, in plain text or base64 encoding.
The flaw is remotely exploitable with low complexity, but no public exploit is known and it is not in KEV.
Restrict network access to the controller and update firmware to a version that secures configuration backups.
Technical Analysis
CVE-2023-53739 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (4)
Quick Facts
Related CVEs (CWE-260)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-53739 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts