CVE-2023-43478

Name: CVE-2023-43478
Creator: NVD / NIST
Published: 2023-09-20T14:15:15.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 17.42%

Last modified Jun 17, 2026

CVE-2023-43478 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. . EPSS estimates a 17.42% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

17.42%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Telstra	Arcadyan Lh1000 Firmware	< 0.18.15r

References

https://www.tenable.com/security/research/tra-2023-19Exploit, Third Party Advisory
https://www.tenable.com/security/research/tra-2023-19Exploit, Third Party Advisory

Timeline

Published: Sep 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43478?

How severe is CVE-2023-43478?

CVE-2023-43478 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 17.42% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43478?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43478?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST