CVE-2023-33238

Name: CVE-2023-33238
Creator: NVD / NIST
Published: 2023-08-17T03:15:09.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2023-33238 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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 inadequate input validation in the certificate management function, which could potentially allow malicious users to execute remote code on affected devices.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

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 inadequate input validation in the certificate management function, which could potentially allow malicious users to execute remote code on affected devices.

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

0.70%

48.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Moxa	Tn-5900 Firmware	<= 3.3
Moxa	Tn-4900 Firmware	<= 1.2.4

References

Timeline

Published: Aug 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-33238?

How severe is CVE-2023-33238?

CVE-2023-33238 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-33238?

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-2023-33238?

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

Scan your code now

Source: NVD / NIST