CVE-2023-54327

Name: CVE-2023-54327
Creator: NVD / NIST
Published: 2025-12-30T23:15:48.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2023-54327 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

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:X/V:X/RE:X/U:X

EPSS Probability

0.62%

45.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Tinycontrol	Lan Controller Firmware	<= 1.58a

References

https://www.exploit-db.com/exploits/51732Exploit, Third Party Advisory
https://www.tinycontrol.plProduct
https://www.vulncheck.com/advisories/tinycontrol-lan-controller-a-authentication-bypass-via-admin-password-changeThird Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.phpExploit, Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5787.phpExploit, Third Party Advisory

Timeline

Published: Dec 30, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-54327?

How severe is CVE-2023-54327?

CVE-2023-54327 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2023-54327?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-54327?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST