CVE-2023-43478 in the critical feed json
Unauthenticated configuration restore and firmware update
published 2023-09-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-47893
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 18.0%
- EPSS 18.0% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
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.
Patch / fix
- Telstra Smart Modem Gen 2 (Arcadyan LH1000) 0.18.15r
- telstra arcadyan_lh1000 0.18.15r
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
17.95% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2023-19 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Telstra Smart Modem Gen 2 (Arcadyan LH1000)
- telstra arcadyan_lh1000
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
tenable.com
/security/research/tra-2023-19
exploit, third-party-advisory
Sources
- CVE List CVE-2023-43478
- NVD CVE-2023-43478
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.