CVE-2023-4452

Web Server Buffer Overflow Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability has been identified in the EDR-810, EDR-G902, and EDR-G903 Series, making them vulnerable to the denial-of-service vulnerability. This vulnerability stems from insufficient input validation in the URI, potentially enabling malicious users to trigger the device reboot.

Se ha identificado una vulnerabilidad en Series EDR-810, EDR-G902 y EDR-G903, lo que las hace vulnerables a la vulnerabilidad de denegación de servicio. Esta vulnerabilidad se debe a una validación de entrada insuficiente en el URI, lo que potencialmente permite que usuarios malintencionados activen el reinicio del dispositivo.

*Credits: Zhiyuan Chen

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-08-21 CVE Reserved
2023-11-01 CVE Published
2024-09-06 CVE Updated
2025-04-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

CAPEC-100: Overflow Buffers

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-234880-edr-810-g902-g903-series-web-server-buffer-overflow-vulnerability	2023-11-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Moxa Search vendor "Moxa"	Edr-g903 Firmware Search vendor "Moxa" for product "Edr-g903 Firmware"	< 5.7.21 Search vendor "Moxa" for product "Edr-g903 Firmware" and version " < 5.7.21"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-g903 Search vendor "Moxa" for product "Edr-g903"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-g903-t Firmware Search vendor "Moxa" for product "Edr-g903-t Firmware"	< 5.7.21 Search vendor "Moxa" for product "Edr-g903-t Firmware" and version " < 5.7.21"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-g903-t Search vendor "Moxa" for product "Edr-g903-t"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-g902 Firmware Search vendor "Moxa" for product "Edr-g902 Firmware"	< 5.7.21 Search vendor "Moxa" for product "Edr-g902 Firmware" and version " < 5.7.21"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-g902 Search vendor "Moxa" for product "Edr-g902"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-g902-t Firmware Search vendor "Moxa" for product "Edr-g902-t Firmware"	< 5.7.21 Search vendor "Moxa" for product "Edr-g902-t Firmware" and version " < 5.7.21"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-g902-t Search vendor "Moxa" for product "Edr-g902-t"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-810-vpn-2gsfp Firmware Search vendor "Moxa" for product "Edr-810-vpn-2gsfp Firmware"	< 5.12.29 Search vendor "Moxa" for product "Edr-810-vpn-2gsfp Firmware" and version " < 5.12.29"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-810-vpn-2gsfp Search vendor "Moxa" for product "Edr-810-vpn-2gsfp"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-810-vpn-2gsfp-t Firmware Search vendor "Moxa" for product "Edr-810-vpn-2gsfp-t Firmware"	< 5.12.29 Search vendor "Moxa" for product "Edr-810-vpn-2gsfp-t Firmware" and version " < 5.12.29"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-810-vpn-2gsfp-t Search vendor "Moxa" for product "Edr-810-vpn-2gsfp-t"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-810-2gsfp Firmware Search vendor "Moxa" for product "Edr-810-2gsfp Firmware"	< 5.12.29 Search vendor "Moxa" for product "Edr-810-2gsfp Firmware" and version " < 5.12.29"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-810-2gsfp Search vendor "Moxa" for product "Edr-810-2gsfp"	-	-	Safe
Moxa Search vendor "Moxa"	Edr-810-2gsfp-t Firmware Search vendor "Moxa" for product "Edr-810-2gsfp-t Firmware"	< 5.12.29 Search vendor "Moxa" for product "Edr-810-2gsfp-t Firmware" and version " < 5.12.29"	-	Affected	in	Moxa Search vendor "Moxa"	Edr-810-2gsfp-t Search vendor "Moxa" for product "Edr-810-2gsfp-t"	-	-	Safe