Unauthenticated Vulnerability in Tinycontrol LAN Controller v3 LK3 by Tinycontrol
CVE-2023-53739

9.9CRITICAL

Key Information:

Vendor

Tinycontrol

Status
Tinycontrol Lan Controller V
Lk
Vendor
CVE Published:
9 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-53739?

The Tinycontrol LAN Controller v3 LK3 version 1.58a is prone to an unauthenticated file access vulnerability that allows remote attackers to exploit the system for unauthorized retrieval of sensitive configuration backups. By leveraging this flaw, attackers can download the 'lk3_settings.bin' file, which contains base64-encoded user and admin credentials, granting them access to critical system settings without needing authentication. This poses a significant risk, as the exposure of sensitive information could lead to unauthorized access and control over the affected systems.

Affected Version(s)

LK <=1.58a <= 1.58a

LK HW 3.8

Tinycontrol LAN Controller v <=1.58a <= 1.58a

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-53739 - Proof of Concept

References

https://www.exploit-db.com/exploits/51731
exploit
https://www.tinycontrol.pl
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-57...
vendor-advisory

CVSS V4

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
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CVE-2023-53739 : Unauthenticated Vulnerability in Tinycontrol LAN Controller v3 LK3 by Tinycontrol