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Vulnerability record · CVE-2021-39433 · published 4 October 2021

CVE-2021-39433: Biqsdrive vulnerability

Biqs · Biqsdrive

A local file inclusion (LFI) vulnerability exists in version BIQS IT Biqs-drive v1.83 and below when sending a specific payload as the file parameter to download/index.php. This allows the attacker to read arbitrary files from the server with the permissions of the configured web-user.

7.5 CVSS 3.1 High EPSS 8.7% · top 5.0%
7.5CVSS 3.1 base score, v2 5.0
8.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A local file inclusion (LFI) vulnerability exists in version BIQS IT Biqs-drive v1.83 and below when sending a specific payload as the file parameter to download/index.php. This allows the attacker to read arbitrary files from the server with the permissions of the configured web-user.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://biqs-drive.be/ Broken Link
https://github.com/PinkDraconian/CVE-2021-39433/blob/main/README.md ExploitThird Party Advisory
https://biqs-drive.be/ Broken Link
https://github.com/PinkDraconian/CVE-2021-39433/blob/main/README.md ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-39433), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.