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Vulnerability record · CVE-2020-21999 · published 4 May 2021

CVE-2020-21999: Iwt facesentry access control system firmware os command injection vulnerability

Iwt · Facesentry Access Control System Firmware

iWT Ltd FaceSentry Access Control System 6.4.8 suffers from an authenticated OS command injection vulnerability using default credentials. This can be exploited to inject and execute arbitrary shell commands as the root user via the 'strInIP' POST parameter in pingTest PHP script.

8.8 CVSS 3.1 High EPSS 5.2% · top 7.8% CWE-78 · OS command injection
8.8CVSS 3.1 base score, v2 9.0
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

iWT Ltd FaceSentry Access Control System 6.4.8 suffers from an authenticated OS command injection vulnerability using default credentials. This can be exploited to inject and execute arbitrary shell commands as the root user via the 'strInIP' POST parameter in pingTest PHP script.

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

Affected products

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

References

LinkTags
https://www.exploit-db.com/exploits/47066 ExploitThird Party AdvisoryVDB Entry
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5525.php ExploitThird Party Advisory
https://www.exploit-db.com/exploits/47066 ExploitThird Party AdvisoryVDB Entry
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5525.php ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-21999), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.