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CVE-2026-82781

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.

CONPROSYS nano 系列存在跨站点脚本（XSS）漏洞。如果该漏洞被利用，可能在已登录用户的 Web 浏览器中执行任意脚本。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-82781

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site scripting vulnerability exists in CONPROSYS nano Series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
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 -
Contec Co., Ltd. Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 0 ~ 1.02 -
Contec Co., Ltd. Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 0 ~ 1.61 -

II. Public POCs for CVE-2026-82781

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III. Intelligence Information for CVE-2026-82781

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Vendor Advisories for CVE-2026-82781 (1)

Other References for CVE-2026-82781 (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-2026-82777 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-2026-82762 8.8 HIGH Contec FX系列OS命令注入漏洞
CVE-2026-82791 8.8 HIGH Contec CAN 2.0B 操作系统命令注入漏洞
CVE-2026-82794 8.8 HIGH SolarView Compact调度设置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-2026-82768 8.1 HIGH SGA1000存在路径遍历漏洞
CVE-2026-82765 8.1 HIGH Contec FX系列FTP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-2026-82788 6.1 MEDIUM CPSL-08P1EN 跨站脚本漏洞
CVE-2026-82776 6.1 MEDIUM CONPROSYS PAC系列跨站脚本漏洞
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-2026-82771 5.4 MEDIUM Contec EC1000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-79

V. Comments for CVE-2026-82781

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