---
id: CVE-2021-37293
title: >-
  A Directory Traversal vulnerability exists in KevinLAB Inc Building Energy
  Management System 4ST BEMS 1.0.0 via the page GET parameter in index.php.
summary: >-
  A Directory Traversal vulnerability exists in KevinLAB Inc Building Energy
  Management System 4ST BEMS 1.0.0 via the page GET parameter in index.php.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
vendor: kevinlab
product: 4st_l-bems
affected:
  - 4st_l-bems = 1.0.0
published: '2022-04-11'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-37293'
references:
  - url: 'https://www.zeroscience.mk/en/vulnerabilities/'
    label: cve@mitre.org
  - url: 'http://www.kevinlab.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.zeroscience.mk/en/vulnerabilities/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01449
epssPercentile: 0.71774
ingestedAt: '2026-07-06T17:03:24.151Z'
---

## Overview

A Directory Traversal vulnerability exists in KevinLAB Inc Building Energy Management System 4ST BEMS 1.0.0 via the page GET parameter in index.php.

## Affected

- `4st_l-bems = 1.0.0`

## Remediation

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