What is CVE-2021-37293?

CVE-2021-37293 is a medium-severity vulnerability in Kevinlab 4st L-Bems, classified under Path Traversal. CVSS score: 6.5/10. Published 2022-04-11.

How severe is CVE-2021-37293?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Kevinlab 4st L-Bems

CVE-2021-37293

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2022-04-11 · last modified 2026-07-05.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.5th percentile), scored 2026-10-09.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Kevinlab 4st L-Bems — versions 1.0.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

www.zeroscience.mk/en/vulnerabilities/ (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-37293?: CVE-2021-37293 is a medium-severity vulnerability in Kevinlab 4st L-Bems, classified under Path Traversal. CVSS score: 6.5/10. Published 2022-04-11.
How severe is CVE-2021-37293?: Medium severity. CVSS v3 base score is 6.5 out of 10.