# CVE-2023-53739

## Summary

- **CVE ID:** CVE-2023-53739
- **Severity:** CRITICAL
- **CVSS Score:** 9.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N)
- **CWE:** CWE-260
- **Published:** Dec 9, 2025
- **Last Modified:** Jul 28, 2026

## 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.

## Affected Products

- Tinycontrol — Tinycontrol LAN Controller v (<=1.58a)
- Tinycontrol — Tinycontrol LAN Controller v (HW 3.8)
- Tinycontrol — LK (<=1.58a)
- Tinycontrol — LK (HW 3.8)

## References

- [CNA](https://www.exploit-db.com/exploits/51731)
- [CNA](https://www.tinycontrol.pl)
- [CNA](https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5786.php)
- [CNA](https://www.vulncheck.com/advisories/tinycontrol-lan-controller-v3-lk3-unauthenticated-configuration-backup-disclosure)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 63.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._