CVE-2023-33237

Authentication Bypass Without Administrator Privilege

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors.

*Credits: N/A

CVSS Scores

NISTv3.1 8.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-05-19 CVE Reserved
2023-08-17 CVE Published
2024-08-23 EPSS Updated
2024-10-28 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication
CWE-863: Incorrect Authorization

CAPEC

CAPEC-115: Authentication Bypass

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230402-tn-5900-and-tn-4900-series-web-server-multiple-vulnerabilities	2023-08-22

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Moxa Search vendor "Moxa"	Tn-5900 Firmware Search vendor "Moxa" for product "Tn-5900 Firmware"	<= 3.3 Search vendor "Moxa" for product "Tn-5900 Firmware" and version " <= 3.3"	-	Affected	in	Moxa Search vendor "Moxa"	Tn-5900 Search vendor "Moxa" for product "Tn-5900"	-	-	Safe