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CVE-2026-82785

Quick assessment

Affected
Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*
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.

CPSN-MCB271-* 型远程 I/O 耦合单元（服务器型）中存在基于栈的缓冲区溢出漏洞。远程攻击者构造并发送特制的请求，可能导致拒绝服务（DoS）状态。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-82785

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Stack-based buffer overflow vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. Receiving a specially crafted request created and sent by a remote attacker may cause a denial-of-service (DoS) condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* 0 ~ 1.82 -

II. Public POCs for CVE-2026-82785

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III. Intelligence Information for CVE-2026-82785

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Vendor Advisories for CVE-2026-82785 (1)

Other References for CVE-2026-82785 (1)

Same Patch Batch · Contec Co., Ltd. · 2026-09-14 · 32 CVEs total

CVE-2026-82787 9.8 CRITICAL CPSL-08P1EN 关键函数缺失认证
CVE-2026-82794 8.8 HIGH SolarView Compact调度设置OS命令注入漏洞
CVE-2026-82777 8.8 HIGH CONPROSYS PAC Series OS命令注入漏洞
CVE-2026-82770 8.8 HIGH Contec RP-WAH-SR 缓冲区溢出远程代码执行漏洞
CVE-2026-82791 8.8 HIGH Contec CAN 2.0B 操作系统命令注入漏洞
CVE-2026-82762 8.8 HIGH Contec FX系列OS命令注入漏洞
CVE-2026-82772 8.8 HIGH Contec EC1000系列Web服务堆溢出漏洞
CVE-2026-82774 8.8 HIGH CONPROSYS M2M系列OS命令注入漏洞
CVE-2026-82766 8.8 HIGH SGA1000存在操作系统命令注入漏洞
CVE-2026-82765 8.1 HIGH Contec FX系列FTP路径遍历漏洞
CVE-2026-82768 8.1 HIGH SGA1000存在路径遍历漏洞
CVE-2026-82793 7.2 HIGH Contec CAN 2.0B 危险文件上传致任意代码执行
CVE-2026-82784 6.5 MEDIUM CPSN-MCB271未认证REST API导致I/O被控
CVE-2026-82786 6.3 MEDIUM 施耐德CPSN-MCB271凭证保护不足致信息泄露
CVE-2026-82776 6.1 MEDIUM CONPROSYS PAC系列跨站脚本漏洞
CVE-2026-82788 6.1 MEDIUM CPSL-08P1EN 跨站脚本漏洞
CVE-2026-82773 6.1 MEDIUM CONPROSYS M2M Gateway 跨站脚本漏洞
CVE-2026-82763 5.4 MEDIUM Contec FX5000/4000/3000 跨站脚本漏洞
CVE-2026-82781 5.4 MEDIUM CONPROSYS nano系列跨站脚本漏洞
CVE-2026-82796 5.4 MEDIUM SolarView Compact图片管理模块跨站脚本执行命令漏洞

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*
Same vendor: Contec Co., Ltd.
Same weakness: CWE-121

V. Comments for CVE-2026-82785

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