---
id: CVE-2023-54327
title: >-
  Tinycontrol LAN Controller 1.58a contains an authentication bypass
  vulnerability that allows unauthenticated attackers to change admin passwords
  through a crafted API request
summary: >-
  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 …
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-862
vendor: tinycontrol
product: lan_controller_firmware
affected:
  - lan_controller_firmware <= 1.58a
published: '2025-12-30'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T23:10:00.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-54327'
references:
  - url: 'https://www.exploit-db.com/exploits/51732'
    label: disclosure@vulncheck.com
  - url: 'https://www.tinycontrol.pl'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/tinycontrol-lan-controller-a-authentication-bypass-via-admin-password-change
    label: disclosure@vulncheck.com
  - url: 'https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.php'
    label: disclosure@vulncheck.com
  - url: 'https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.php'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00698
epssPercentile: 0.51031
ingestedAt: '2026-09-24T23:55:20.489Z'
---

## Overview

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.

## Affected

- `lan_controller_firmware <= 1.58a`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.