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CVE-2021-20600

Quick assessment

Affected
n/a Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V
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。 Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V 存在资源管理错误漏洞，攻击者可利用该漏洞在模块启动时短时间内向该模块发送大量数据包，造成资源的不可控制消耗。

AI Predicted 7.5 Difficulty: Easy EPSS 2.38% · P84

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-20600

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mitsubishi Electric MELSEC iQ-R series 资源管理错误漏洞
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。 Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V 存在资源管理错误漏洞，攻击者可利用该漏洞在模块启动时短时间内向该模块发送大量数据包，造成资源的不可控制消耗。
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 MELSEC iQ-R series C Controller Module R12CCPU-V Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior -

II. Public POCs for CVE-2021-20600

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20600

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Vendor Advisories for CVE-2021-20600 (2)

Other References for CVE-2021-20600 (1)

Same Patch Batch · n/a · 2021-10-08 · 17 CVEs total

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IV. Related Vulnerabilities

Same vendor: n/a