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Fencer Vulns
high 8.8

CVE-2023-33239 json

Second Order Command-injection Vulnerability in the Key-generation Function

published 2023-08-17 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37408

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

TN-4900 Series firmware versions v1.2.4 and prior and TN-5900 Series firmware versions v3.3 and prior are vulnerable to the command injection vulnerability. This vulnerability stems from insufficient input validation in the key-generation function, which could potentially allow malicious users to execute remote code on affected devices.

Patch / fix

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/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

  • Moxa TN-5900 Series
  • Moxa TN-4900 Series
  • Moxa EDR-810 Series
  • Moxa EDR-G902 Series
  • Moxa EDR-G903 Series
  • Moxa EDR-G9010 Series
  • Moxa NAT-102 Series
  • moxa edr-g903
  • moxa tn-5900
  • moxa tn-4900
  • moxa edr-810
  • moxa edr-g902
  • moxa edr-g9010
  • moxa nat-102

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-77 Improper Neutralization of Special Elements used in a Command

References

Sources

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.