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CVE-2021-25660

Quick assessment

Affected
Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants)
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.

Siemens SIMATIC WinCC是德国西门子（Siemens）公司的一套自动化的数据采集与监控（SCADA）系统。 SIMATIC WinCC 存在缓冲区错误漏洞。该漏洞源于程序存在一个超出范围的内存访问漏洞，这可能导致代码执行。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.97% · P61

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) All versions < V15.1 Update 6 affected
Siemens SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) All versions < V16 Update 4 affected
Siemens SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) All versions < V15.1 Update 6 affected
Siemens SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) All versions < V16 Update 4 affected
Siemens SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F All versions < V15.1 Update 6 affected
Siemens SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F All versions < V16 Update 4 affected
Siemens SIMATIC WinCC Runtime Advanced V15 All versions < V15.1 Update 6 affected
Siemens SIMATIC WinCC Runtime Advanced V16 All versions < V16 Update 4 affected
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I. Basic Information for CVE-2021-25660

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 HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在缓冲区结束位置之后访问内存
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC WinCC 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC WinCC是德国西门子（Siemens）公司的一套自动化的数据采集与监控（SCADA）系统。 SIMATIC WinCC 存在缓冲区错误漏洞。该漏洞源于程序存在一个超出范围的内存访问漏洞，这可能导致代码执行。
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 HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) All versions < V15.1 Update 6 -
Siemens SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) All versions < V16 Update 4 -
Siemens SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) All versions < V15.1 Update 6 -
Siemens SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) All versions < V16 Update 4 -
Siemens SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F All versions < V15.1 Update 6 -
Siemens SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F All versions < V16 Update 4 -
Siemens SIMATIC WinCC Runtime Advanced V15 All versions < V15.1 Update 6 -
Siemens SIMATIC WinCC Runtime Advanced V16 All versions < V16 Update 4 -

II. Public POCs for CVE-2021-25660

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III. Intelligence Information for CVE-2021-25660

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Vendor Advisories for CVE-2021-25660 (1)

Same Patch Batch · Siemens · 2021-05-12 · 13 CVEs total

CVE-2021-27385 Siemens SmartVNC 资源管理错误漏洞
CVE-2021-27386 Siemens SIMATIC WinCC 缓冲区错误漏洞
CVE-2021-27396 Siemens Tecnomatix Plant Simulation 安全漏洞
CVE-2021-27397 Siemens Tecnomatix Plant Simulation 缓冲区错误漏洞
CVE-2021-27398 siemens Tecnomatix RobotExpert 安全漏洞
CVE-2021-31339 Siemens Mendix 安全漏洞
CVE-2020-25242 多款 Siemens 设备资源管理错误漏洞
CVE-2021-25661 Siemens SIMATIC WinCC 安全漏洞
CVE-2021-25662 Siemens SIMATIC WinCC 安全漏洞
CVE-2021-27383 Siemens SmartVNC 缓冲区错误漏洞
CVE-2021-27384 Siemens SIMATIC WinCC 安全漏洞
CVE-2019-19276 多款 Siemens 设备缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants)
Same vendor: Siemens
Same weakness: CWE-788

V. Comments for CVE-2021-25660

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