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CVE-2021-20612

Quick assessment

Affected
n/a MELSEC-F series FX3U-ENET; MELSEC-F series FX3U-ENET-L; MELSEC-F series FX3U-ENET-P502
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-F Series是日本三菱电机（Mitsubishi Electric）公司的工控设备具有模拟和通信功能可扩展性的基本微型 PLC。 Mitsubishi Electric MELSEC-F Series存在安全漏洞，该漏洞源于软件缺乏管理控制，这可能允许攻击者可利用该漏洞远程发送专门制作的数据包，并导致拒绝服务条件或其他未指定的影响。

AI Predicted 7.5 Difficulty: Easy EPSS 3.60% · P89
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I. Basic Information for CVE-2021-20612

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Lack of administrator control over security vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.14 and prior, FX3U-ENET-L Firmware version 1.14 and prior and FX3U-ENET-P502 Firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product or other unspecified effects by sending specially crafted packets to an unnecessary opening of TCP port. Control by MELSEC-F series PLC is not affected by this vulnerability, but 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-F Series 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mitsubishi Electric MELSEC-F Series是日本三菱电机（Mitsubishi Electric）公司的工控设备具有模拟和通信功能可扩展性的基本微型 PLC。 Mitsubishi Electric MELSEC-F Series存在安全漏洞，该漏洞源于软件缺乏管理控制，这可能允许攻击者可利用该漏洞远程发送专门制作的数据包，并导致拒绝服务条件或其他未指定的影响。
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
- MELSEC-F series FX3U-ENET; MELSEC-F series FX3U-ENET-L; MELSEC-F series FX3U-ENET-P502 Firmware version 1.14 and prior -

II. Public POCs for CVE-2021-20612

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20612

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Vendor Advisories for CVE-2021-20612 (2)

Other References for CVE-2021-20612 (1)

Same Patch Batch · n/a · 2022-01-14 · 61 CVEs total

CVE-2021-23567 7.5 HIGH Denial of Service (DoS)
CVE-2021-23566 4.0 MEDIUM Information Exposure
CVE-2021-46020 mruby缓冲区错误漏洞
CVE-2021-39634 Google Android 资源管理错误漏洞
CVE-2021-46169 Modex 资源管理错误漏洞
CVE-2021-46168 Spin缓冲区错误漏洞
CVE-2021-46021 GNU Recutils 资源管理错误漏洞
CVE-2021-1037 Google Android Automotive OS安全漏洞
CVE-2021-1036 Android Automotive Os安全漏洞
CVE-2021-1035 Android Automotive Os 安全漏洞
CVE-2021-39684 Google Android 安全漏洞
CVE-2021-39683 Google Android 缓冲区错误漏洞
CVE-2021-45773 lib60870代码问题漏洞
CVE-2021-39682 Google Android 缓冲区错误漏洞
CVE-2021-39681 Google Android 资源管理错误漏洞
CVE-2021-39680 Google Android 信息泄露漏洞
CVE-2021-39679 Google Android 资源管理错误漏洞
CVE-2021-39678 Google Android 安全漏洞
CVE-2021-39659 Google Android 安全漏洞
CVE-2021-39633 Google Android 缓冲区错误漏洞

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: MELSEC-F series FX3U-ENET; MELSEC-F series FX3U-ENET-L; MELSEC-F series FX3U-ENET-P502
Same vendor: n/a

V. Comments for CVE-2021-20612

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