CVE-2021-37292

Exp

An Access Control vulnerability exists in KevinLAB Inc Building Energy Management System 4ST BEMS 1.0.0 due to an undocumented backdoor account. A malicious user can log in using the backdor account with admin highest privileges and obtain system control.

Published: 2022-04-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-37292 is rated High Exploit Risk (78.4/100): CVSS High severity, with high exploitation likelihood (EPSS 13.05%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.68% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-37292

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-37292

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-10 11.37% 13.05% +1.68%
2 2026-03-06 5.56% 11.37% +5.81%
3 2025-12-10 — 5.56% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37292

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2021-37292

Affected software / configurations for CVE-2021-37292

Vendor Product Version Raw CPE
kevinlab 4st_l-bems 1.0.0 cpe:2.3:a:kevinlab:4st_l-bems:1.0.0:*:*:*:*:*:*:*

References for CVE-2021-37292

URL Tags
http://www.kevinlab.com Vendor Advisory
https://www.zeroscience.mk/en/vulnerabilities/ Exploit Third Party Advisory
cvelogic Threat Intelligence