CVE-2025-10259— Denial-of-Service(DoS) Vulnerability in TCP Communication Function on MELSEC iQ-F Series CPU module
Quick assessment
Affected
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/ES
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-F Series CPU是日本三菱电机（Mitsubishi Electric）公司的一系列CPU模块。 Mitsubishi Electric MELSEC iQ-F Series CPU存在安全漏洞，该漏洞源于TCP通信功能中对输入数量验证不当，可能导致远程攻击者通过发送特制TCP数据包断开连接，造成拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-10259
Vulnerability Information
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Vulnerability Title
Denial-of-Service(DoS) Vulnerability in TCP Communication Function on MELSEC iQ-F Series CPU module
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Validation of Specified Quantity in Input vulnerability in TCP Communication Function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote attacker to disconnect the connection by sending specially crafted TCP packets to cause a denial-of-service (DoS) condition on the products. There is no impact on connections other than the attacked one.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5
Vulnerability Title
Mitsubishi Electric MELSEC iQ-F Series CPU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mitsubishi Electric MELSEC iQ-F Series CPU是日本三菱电机（Mitsubishi Electric）公司的一系列CPU模块。 Mitsubishi Electric MELSEC iQ-F Series CPU存在安全漏洞，该漏洞源于TCP通信功能中对输入数量验证不当，可能导致远程攻击者通过发送特制TCP数据包断开连接，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
II. Public POCs for CVE-2025-10259
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2025-10259 (1)
-
JVNVU#92088475: 三菱電機製MELSEC iQ-F CPUユニットのTCP通信におけるサービス運用妨害（DoS）の脆弱性 government-resource
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V. Comments for CVE-2025-10259
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