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Public proof of conceptFix available

CVE-2023-43477

A public proof of concept exists; no exploitation attested.

  • Published2023-09-20
  • Fixed in0.18.15r
  • WeaknessCWE-77

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The ping_from parameter of ping_tracerte.cgi in the web UI of Telstra Smart Modem Gen 2 (Arcadyan LH1000), firmware versions < 0.18.15r, was not properly sanitized before being used in a system call, which could allow an authenticated attacker to achieve command injection as root on the device. 

Timeline

dates in UTC
  1. 2023-09-2013:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-43477?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-43477?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD
Telstra arcadyan lh1000
BranchAffectedFixed in
0.18< 0.18.15r0.18.15r
Telstra arcadyan lh1000 firmwareversion to verify
BranchAffectedFixed in
0.18< 0.18.15r0.18.15r

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As tenable, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Telstra Smart Modem Gen 2 (Arcadyan LH1000)other versions: not affected
    Affected
    • < 0.18.15rfixed in 0.18.15rcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-09-20

Fix

  1. Update Telstra arcadyan lh1000 to 0.18.15r

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-09-24
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.16.8known since 2026-10-23
  • NVDCVSS 3.18.8read 2026-10-23
  • CNAweakness (CWE)CWE-77known since 2026-10-23
  • NVDweakness (CWE)CWE-77read 2026-10-23
  • FIRST EPSSEPSS score17.7 %read 2026-11-03
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-87jp-gf78-6p6w

Frequently asked questions

What is CVE-2023-43477?

The ping_from parameter of ping_tracerte.cgi in the web UI of Telstra Smart Modem Gen 2 (Arcadyan LH1000), firmware versions < 0.18.15r, was not properly sanitized before being used in a system call, which could allow an authenticated attacker to achieve command injection as root on the device. 

Is CVE-2023-43477 actively exploited?

A proof-of-concept exploit exists for CVE-2023-43477, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-43477?

CVE-2023-43477 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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