Skip to main content
CVE-2023-53739VulnerabilityPublished

CVE-2023-53739: Tinycontrol LAN Controller v · Password in Configuration File

Affects Tinycontrol LAN Controller vSource CVE Database V5

0

Not known to be exploited · CVSS 9.9 Critical.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score
9.9Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Tinycontrol Tinycontrol LAN Controller vAffected
  • =1.58
  • =3.8
Fixed in–

AI-suggested

1. Immediately restrict network access to Tinycontrol LAN Controllers by implementing strict firewall rules and network segmentation to isolate these devices from untrusted networks. 2. Disable remote management interfaces if not required or limit access to trusted IP addresses only. 3. Monitor network traffic for unusual requests attempting to download configuration files, especially requests targeting lk3_settings.bin. 4. Regularly audit device configurations and change default or weak passwords to strong, unique credentials. 5. Engage with the vendor for firmware updates or patches addressing this vulnerability and apply them promptly once available. 6. Implement multi-factor authentication (MFA) on management interfaces if supported to add an additional security layer. 7. Conduct internal penetration testing and vulnerability assessments focusing on network controllers and industrial control systems to identify similar risks. 8. Maintain an incident response plan tailored for industrial control system breaches to quickly contain and remediate any compromise.

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.

References

Community reviews

Loading reviews…