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CRITICAL

CVE-2023-43478

CVSS v3

9.8

CRITICAL

EPSS Score

18.0 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2023-43478 yet.

Full record on NVD

Description

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. 

Technical details

Published
2023-09-20

Frequently asked questions

What is CVE-2023-43478?

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. 

Is CVE-2023-43478 actively exploited?

Active exploitation of CVE-2023-43478 has not been confirmed. Its EPSS score was 18.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-43478?

CVE-2023-43478 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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