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TI-2023-23239 Aliases CVE-2023-43478GHSA-x2v2-mj6c-wfp3

Unauthenticated configuration restore and firmware update

Priority HIGH 76CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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-434.

Summary

fake_upload.cgi on the Telstra Smart Modem Gen 2 (Arcadyan LH1000), firmware versions < 0.18.15r, allows unauthenticated attackers to upload firmware images and configuration backups, which could allow them to alter the firmware or the configuration on the device, ultimately leading to code execution as root.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.17954 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-2023-23238 Post-Auth Command Injection in Telstra Smart Modem Gen 2 (Arcadyan LH1000)Priority HIGH 73
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-43478
  2. 2026-10-03 Alias added: GHSA-x2v2-mj6c-wfp3

References

Exploit 1

  • TI-2023-23238 Post-Auth Command Injection in Telstra Smart Modem Gen 2 (Arcadyan LH1000) CVSS 3.1HIGH 8.8

Sources

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