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TI-2023-23238 Aliases CVE-2023-43477GHSA-87jp-gf78-6p6w

Post-Auth Command Injection in Telstra Smart Modem Gen 2 (Arcadyan LH1000)

Priority HIGH 73CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.17674 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Smart Modem Gen 2 (Arcadyan LH1000) (Telstra): 0.18.15r

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TelstraSmart Modem Gen 2 (Arcadyan LH1000)before 0.18.15r0.18.15rPatch availableCNA
  • Smart Modem Gen 2 (Arcadyan LH1000) VendorTelstra Affected before 0.18.15r Fixed in 0.18.15r Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:telstra:arcadyan_lh1000_firmware:*:*:*:*:*:*:*:*before 0.18.15rVulnerableTelstra
cpe:2.3:h:telstra:arcadyan_lh1000:-:*:*:*:*:*:*:*not specified by NVDRunning onTelstra
  • cpe:2.3:o:telstra:arcadyan_lh1000_firmware:*:*:*:*:*:*:*:* Versions before 0.18.15r Vulnerable ·Telstra
  • cpe:2.3:h:telstra:arcadyan_lh1000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telstra

Remediation

  • Fix · CNA Smart Modem Gen 2 (Arcadyan LH1000) (Telstra) Fixed in 0.18.15r

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Telstra Smart Modem Gen 2 (Arcadyan LH1000) 0.18.15r

    2 records Highest priority Priority HIGH 2 HIGH

    Other records, highest priority first

    • TI-2023-23239 Unauthenticated configuration restore and firmware updatePriority HIGH 76
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-43477
  2. 2026-10-03 Alias added: GHSA-87jp-gf78-6p6w

References

Exploit 1

  • TI-2023-23239 Unauthenticated configuration restore and firmware update CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences