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CVE-2026-22925

Quick assessment

Affected
Siemens SIMATIC CN 4100
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Siemens SIMATIC CN 4100是德国西门子（Siemens）公司的一个通信节点。 Siemens SIMATIC CN 4100 V5.0之前版本存在安全漏洞，该漏洞源于处理大量TCP SYN数据包时容易受到资源耗尽，可能导致拒绝服务。

CVSS 7.5 · High EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Siemens SIMATIC CN 4100 < V5.0 affected
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I. Basic Information for CVE-2026-22925

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application is susceptible to resource exhaustion when subjected to high volume of TCP SYN packets This could allow an attacker to render the service unavailable and cause denial-of-service conditions by overwhelming system resources.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC CN 4100 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC CN 4100是德国西门子（Siemens）公司的一个通信节点。 Siemens SIMATIC CN 4100 V5.0之前版本存在安全漏洞，该漏洞源于处理大量TCP SYN数据包时容易受到资源耗尽，可能导致拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
Siemens SIMATIC CN 4100 0 ~ V5.0 -

II. Public POCs for CVE-2026-22925

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
default-local-qwen3.6 · 12854 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-22925

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Vendor Advisories for CVE-2026-22925 (1)

Same Patch Batch · Siemens · 2026-05-12 · 20 CVEs total

CVE-2025-40949 9.1 CRITICAL Siemens多款产品 操作系统命令注入漏洞
CVE-2026-22924 9.1 CRITICAL Siemens SIMATIC CN 4100 访问控制错误漏洞
CVE-2026-25786 9.1 CRITICAL Siemens多款产品 跨站脚本漏洞
CVE-2026-25787 9.1 CRITICAL Siemens SIMATIC 跨站脚本漏洞
CVE-2026-41551 9.1 CRITICAL Siemens ROS# 安全漏洞
CVE-2025-40946 8.3 HIGH Siemens多款产品 安全漏洞
CVE-2025-12659 7.8 HIGH Heap-based buffer overflow in Siemens Simcenter Femap
CVE-2026-44412 7.8 HIGH Siemens Solid Edge 安全漏洞
CVE-2026-44411 7.8 HIGH Siemens Solid Edge 缓冲区错误漏洞
CVE-2026-27662 7.7 HIGH Siemens SIMATIC HMI Comfort Panels 安全漏洞
CVE-2025-40833 7.5 HIGH Siemens多款产品 代码问题漏洞
CVE-2025-40947 7.5 HIGH Siemens RUGGEDCOM 操作系统命令注入漏洞
CVE-2026-33893 7.5 HIGH Siemens多款产品 信任管理问题漏洞
CVE-2026-33862 7.3 HIGH Siemens Teamcenter 跨站脚本漏洞
CVE-2026-25789 7.1 HIGH Siemens多款产品 跨站脚本漏洞
CVE-2025-40948 6.8 MEDIUM Siemens多款产品 参数注入漏洞
CVE-2026-41125 6.0 MEDIUM Siemens多款产品 SQL注入漏洞
CVE-2024-54017 5.3 MEDIUM Siemens SIPROTEC 5 安全漏洞
CVE-2026-42177 5.3 MEDIUM linux-entra-sso: PRT SSO cookie can leak to attacker-controlled hosts when broad host perm

IV. Related Vulnerabilities

Same product: SIMATIC CN 4100
Same vendor: Siemens
Same weakness: CWE-770

V. Comments for CVE-2026-22925

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