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Vulnerability record · CVE-2021-44080 · published 2 June 2022

CVE-2021-44080: Sercomm h500s firmware os command injection vulnerability

SSercomm · H500s Firmware

A Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.

7.2 CVSS 3.1 High EPSS 25% · top 2.2% CWE-78 · OS command injection
7.2CVSS 3.1 base score, v2 9.0
25%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 Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.

CVSS:3.1/AV:N/AC:L/PR:H/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://research.nccgroup.com/2022/05/24/technical-advisory-sercomm-h500s-authenticated-remote-command-execution-cve-202 ExploitThird Party Advisory
https://www.sercomm.com Vendor Advisory
https://research.nccgroup.com/2022/05/24/technical-advisory-sercomm-h500s-authenticated-remote-command-execution-cve-202 ExploitThird Party Advisory
https://www.sercomm.com Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-44080), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.