How severe is CVE-2021-37293?

CVE-2021-37293 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-37293 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37293?

CVE-2021-37293 affects Kevinlab 4st L-bems. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37293?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37293 published?

CVE-2021-37293 was published on 2022-04-11 and last updated on 2026-07-05.

CVE-2021-37293

CVE-2021-37293 is a medium-severity vulnerability in Kevinlab 4st L-bems with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Kevinlab 4st L-bems
Published: 2022-04-11
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-37293?: CVE-2021-37293 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-37293 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37293?: CVE-2021-37293 affects Kevinlab 4st L-bems. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37293?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37293 published?: CVE-2021-37293 was published on 2022-04-11 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:kevinlab:4st_l-bems:1.0.0:*:*:*:*:*:*:*

More vulnerabilities in Kevinlab 4st L-bems

CVE-2021-37291 — Critical (CVSS 9.8): An SQL Injection vulnerability exists in KevinLAB Inc Building Energy Management System 4ST BEMS 1.0.0 ivia the…
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