CVE-2023-43478

9.8 criticalEPSS 18%

Critical (9.8) in telstra arcadyan lh1000 firmware. EPSS 18% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 18% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2023-09-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

telstra:arcadyan_lh1000_firmware

References

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

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