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Vulnerability record · CVE-2023-43477 · published 20 September 2023

CVE-2023-43477: Telstra arcadyan lh1000 firmware command injection vulnerability

Telstra · Arcadyan Lh1000 Firmware

The ping_from parameter of ping_tracerte.cgi in the web UI of Telstra Smart Modem Gen 2 (Arcadyan LH1000), firmware versions < 0.18.15r, was not properly sanitized before being used in a system call, which could allow an authenticated attacker to achieve command injection as root on the device. 

8.8 CVSS 3.1 High EPSS 18% · top 2.9% CWE-77 · Command injection
8.8CVSS 3.1 base score
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The ping_from parameter of ping_tracerte.cgi in the web UI of Telstra Smart Modem Gen 2 (Arcadyan LH1000), firmware versions < 0.18.15r, was not properly sanitized before being used in a system call, which could allow an authenticated attacker to achieve command injection as root on the device. 

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.tenable.com/security/research/tra-2023-19 ExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2023-19 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-2023-43477), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.