CVE-2023-54327: Tinycontrol LAN Controller · Missing Authorization
Affects Tinycontrol LAN ControllerSource CVE Database V5
Not known to be exploited · CVSS 9.3 Critical.
Data as of 26 Oct 2026, 08:30 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 52% 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:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Tinycontrol LAN Controller | Affected
| Fixed in– |
AI-suggested
1. Immediately restrict network access to Tinycontrol LAN Controller management interfaces by implementing strict firewall rules and network segmentation, limiting access to trusted administrative hosts only. 2. Monitor network traffic for unusual or unauthorized API requests targeting the /stm.cgi endpoint, using intrusion detection systems or custom logging. 3. If possible, disable remote management features or restrict them to secure VPN connections to reduce exposure. 4. Engage with the vendor to obtain patches or firmware updates addressing this vulnerability as soon as they become available. 5. Implement multi-factor authentication and strong password policies on all administrative accounts to reduce the impact of credential changes. 6. Conduct regular audits of device configurations and administrative credentials to detect unauthorized changes promptly. 7. Consider deploying network anomaly detection tools focused on industrial or LAN controller traffic patterns. 8. Develop and test incident response plans specific to network device compromise scenarios to ensure rapid containment and recovery.
Description
Tinycontrol LAN Controller 1.58a contains an authentication bypass vulnerability that allows unauthenticated attackers to change admin passwords through a crafted API request. Attackers can exploit the /stm.cgi endpoint with a specially crafted authentication parameter to disable access controls and modify administrative credentials.