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CVE-2021-27395

Quick assessment

Affected
Siemens SIMATIC Process Historian 2013 and earlier
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 Process Historian（Simatic Ph）是德国西门子（Siemens）公司的一个中央归档系统。 Siemens Simatic Process Historian 存在访问控制错误漏洞，该漏洞源于软件中用于关键功能的接口缺乏认证，这可能允许恶意用户恶意插入、修改或删除数据。

AI Predicted 6.5 Difficulty: Easy EPSS 0.80% · P55

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-27395

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 Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens Simatic Process Historian 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens Simatic Process Historian（Simatic Ph）是德国西门子（Siemens）公司的一个中央归档系统。 Siemens Simatic Process Historian 存在访问控制错误漏洞，该漏洞源于软件中用于关键功能的接口缺乏认证，这可能允许恶意用户恶意插入、修改或删除数据。
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 Process Historian 2013 and earlier All versions -
Siemens SIMATIC Process Historian 2014 All versions < SP3 Update 6 -
Siemens SIMATIC Process Historian 2019 All versions -
Siemens SIMATIC Process Historian 2020 All versions -

II. Public POCs for CVE-2021-27395

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-27395

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Vendor Advisories for CVE-2021-27395 (1)

Same Patch Batch · Siemens · 2021-10-12 · 18 CVEs total

CVE-2021-33730 Siemens SINEC NMS SQL注入漏洞
CVE-2021-41546 Siemens Ruggedcom Rox Mx5000 资源管理错误漏洞
CVE-2021-37199 Siemens Sinumerik 808D 缓冲区错误漏洞
CVE-2021-33736 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33735 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33734 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33733 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33732 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33731 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33722 Siemens SINEC NMS 路径遍历漏洞
CVE-2021-33729 Siemens SINEC NMS SQL注入漏洞
CVE-2021-33728 Siemens SINEC NMS 代码问题漏洞
CVE-2021-33727 Siemens SINEC NMS 信息泄露漏洞
CVE-2021-33726 Siemens SINEC NMS 路径遍历漏洞
CVE-2021-33725 Siemens SINEC NMS 路径遍历漏洞
CVE-2021-33724 Siemens SINEC NMS 路径遍历漏洞
CVE-2021-33723 Siemens SINEC NMS 安全漏洞

IV. Related Vulnerabilities

Same vendor: Siemens
Same weakness: CWE-306

V. Comments for CVE-2021-27395

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