---
id: CVE-2021-37291
title: >-
  An SQL Injection vulnerability exists in KevinLAB Inc Building Energy
  Management System 4ST BEMS 1.0.0 ivia the input_id POST parameter in
  index.php.
summary: >-
  An SQL Injection vulnerability exists in KevinLAB Inc Building Energy
  Management System 4ST BEMS 1.0.0 ivia the input_id POST parameter in
  index.php.
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-89
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-2021-37291'
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
  - exploit-available
epss: 0.06535
epssPercentile: 0.93552
ingestedAt: '2026-07-06T17:03:24.147Z'
exploits:
  nuclei:
    - CVE-2021-37291
  checkedAt: '2026-09-26T09:05:27.665Z'
exploitAvailable: true
---

## Overview

An SQL Injection vulnerability exists in KevinLAB Inc Building Energy Management System 4ST BEMS 1.0.0 ivia the input_id POST 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.