Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2025-40944

CVSS 7.5 · High EPSS 0.02% · P5
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-40944

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0) (All versions), SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0) (All versions >= V4.2.0), SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0) (All versions), SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants) (All versions < V1.3), SIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0) (All versions < V6.0.1), SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0) (All versions >= V4.2.0), SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0) (All versions < V4.2.2), SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0) (All versions), SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0) (All versions < V6.0.0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0) (All versions >= V4.2.0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0) (All versions >= V4.2.0), SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0) (All versions >= V4.2.0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0) (All versions >= V4.2.0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0) (All versions >= V4.2.0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0) (All versions >= V4.2.0), SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0) (All versions >= V4.2.0), SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0) (All versions < V6.0.0). Affected devices do not properly handle S7 protocol session disconnect requests. When receiving a valid S7 protocol Disconnect Request (COTP DR TPDU) on TCP port 102, the devices enter an improper session state. This could allow an attacker to cause the device to become unresponsive, leading to a denial-of-service condition that requires a power cycle to restore normal operation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens多款产品 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC ET 200AL等都是德国西门子（Siemens）公司的产品。Siemens SIMATIC ET 200AL是一款分布式I/O系统模块。Siemens SIMATIC ET 200MP是一款用于高密度通道应用的控制柜的模块化I/O系统模块。Siemens SIMATIC ET 200SP是一款分布式I/O系统。 Siemens多款产品存在资源管理错误漏洞，该漏洞源于S7协议会话断开请求处理不当，可能导致设备无响应和拒绝服务。以下产品及版本受到影响：SIMATIC ET 2
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

VendorProductAffected VersionsCPESubscribe
SiemensSIMATIC ET 200AL IM 157-1 PN 0 ~ * -
SiemensSIMATIC ET 200MP IM 155-5 PN HF V4.2.0 ~ * -
SiemensSIMATIC ET 200SP IM 155-6 MF HF 0 ~ * -
SiemensSIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants) 0 ~ V1.3 -
SiemensSIMATIC ET 200SP IM 155-6 PN R1 0 ~ V6.0.1 -
SiemensSIMATIC ET 200SP IM 155-6 PN/2 HF V4.2.0 ~ * -
SiemensSIMATIC ET 200SP IM 155-6 PN/3 HF 0 ~ V4.2.2 -
SiemensSIMATIC PN/MF Coupler 0 ~ * -
SiemensSIMATIC PN/PN Coupler 0 ~ V6.0.0 -
SiemensSIPLUS ET 200MP IM 155-5 PN HF V4.2.0 ~ * -
SiemensSIPLUS ET 200MP IM 155-5 PN HF V4.2.0 ~ * -
SiemensSIPLUS ET 200MP IM 155-5 PN HF T1 RAIL V4.2.0 ~ * -
SiemensSIPLUS ET 200SP IM 155-6 PN HF V4.2.0 ~ * -
SiemensSIPLUS ET 200SP IM 155-6 PN HF V4.2.0 ~ * -
SiemensSIPLUS ET 200SP IM 155-6 PN HF T1 RAIL V4.2.0 ~ * -
SiemensSIPLUS ET 200SP IM 155-6 PN HF TX RAIL V4.2.0 ~ * -
SiemensSIPLUS NET PN/PN Coupler 0 ~ V6.0.0 -

II. Public POCs for CVE-2025-40944

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-40944

请登录查看更多情报信息。

Same Patch Batch · Siemens · 2026-01-13 · 3 CVEs total

CVE-2025-4080510.0 CRITICALSiemens Industrial Edge Devices 安全漏洞
CVE-2025-409428.8 HIGHsiemens TeleControl Server Basic 安全漏洞

IV. Related Vulnerabilities

Same vendor: Siemens
Same weakness: CWE-400

V. Comments for CVE-2025-40944

No comments yet

Leave a comment