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Vulnerability record · CVE-2023-54327 · published 30 December 2025

CVE-2023-54327: Tinycontrol lan controller firmware missing authorization vulnerability

TTinycontrol · Lan Controller Firmware

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.

9.3 CVSS 4.0 Critical EPSS 0.70% · top 48.9% CWE-862 · Missing authorization
9.3CVSS 4.0 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 3 tagged exploit
24 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.exploit-db.com/exploits/51732 ExploitThird Party Advisory
https://www.tinycontrol.pl Product
https://www.vulncheck.com/advisories/tinycontrol-lan-controller-a-authentication-bypass-via-admin-password-change Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.php ExploitThird Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.php ExploitThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-54327), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.