CVE-2023-54327

CRITICAL
Published Dec 30, 2025 Modified Jan 16, 2026 CWE-862

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 v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor Product
tinycontrol lan_controller_firmware
tinycontrol lan_controller

References

Frequently Asked Questions

What is CVE-2023-54327? +
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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2023-54327? +
CVE-2023-54327 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2023-54327? +
CVE-2023-54327 affects products from tinycontrol, specifically: lan_controller, lan_controller_firmware. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-54327? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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