PatchTheCVECVE-2023-54327: Tinycontrol LAN Controller 1.58a contains an authentication bypass vulnerability that allows unauthenticated a
CVE-2023-54327 is a critical-severity flaw (CVSS 9.8) affecting lan controller firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 47%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2025-12-30 |
| Last modified | 2026-09-24 |
Last updated 2026-09-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Write-up: www.exploit-db.com/exploits/51732
- Write-up: www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.php
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-54327?
lan controller firmware: upgrade to newer than 1.58a. Exact commands for each OS are on this page.
Is CVE-2023-54327 being exploited?
CVE-2023-54327 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-54327 affect?
CVE-2023-54327 affects lan controller firmware. Severity is critical (CVSS 9.8). 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 cra
How urgent is CVE-2023-54327?
Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action