What’s Vulnerable › Vulnerabilities

CVE-2023-43477: Post-Auth Command Injection in Telstra Smart Modem Gen 2 (Arcadyan LH1000)

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 17.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-20 · updated 2026-06-17
• Weakness: CWE-77

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.

Affected products

• Telstra Smart Modem Gen 2 (Arcadyan LH1000): before 0.18.15r — fixed in 0.18.15r

How to fix

Upgrade to a fixed version: Telstra Smart Modem Gen 2 (Arcadyan LH1000) 0.18.15r. Check the vendor advisory for mitigations.

References

• https://www.tenable.com/security/research/tra-2023-19
• https://www.tenable.com/security/research/tra-2023-19

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