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CVE-2022-40265— Denial of Service (DoS) Vulnerability in MELSEC iQ-R Series Ethernet Interface Module

Quick assessment

Affected
Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mitsubishi Electric MELSEC iQ-R series是日本三菱电机（Mitsubishi Electric）公司的一款可编程逻辑控制器。 MELSEC iQ-R Series RJ71EN71 固件版本65及之前版本和MELSEC iQ-R Series R04/08/16/32/120ENCPU固件版本65及之前版本存在安全漏洞，该漏洞源于存在不当输入验证，允许远程未经身份验证的攻击者通过发送特制数据包造成拒绝服务。

CVSS 8.6 · High EPSS 1.00% · P61
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I. Basic Information for CVE-2022-40265

Vulnerability Information
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Vulnerability Title
Denial of Service (DoS) Vulnerability in MELSEC iQ-R Series Ethernet Interface Module
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version "65" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version "65" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Mitsubishi Electric MELSEC iQ-R series 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mitsubishi Electric MELSEC iQ-R series是日本三菱电机（Mitsubishi Electric）公司的一款可编程逻辑控制器。 MELSEC iQ-R Series RJ71EN71 固件版本65及之前版本和MELSEC iQ-R Series R04/08/16/32/120ENCPU固件版本65及之前版本存在安全漏洞，该漏洞源于存在不当输入验证，允许远程未经身份验证的攻击者通过发送特制数据包造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version "65" and prior -
Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version "65" and prior -

II. Public POCs for CVE-2022-40265

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III. Intelligence Information for CVE-2022-40265

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Vendor Advisories for CVE-2022-40265 (1)

Other References for CVE-2022-40265 (1)

IV. Related Vulnerabilities

Same vendor: Mitsubishi Electric Corporation
Same weakness: CWE-20

V. Comments for CVE-2022-40265

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