CVE-2025-3449— Weak Session Token used in Automation Runtime SDM
Quick assessment
Affected
B&R Industrial Automation GmbH Automation Runtime
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.
B&R Automation Runtime是B&R Automation公司的一个自动化运行时。 B&R Automation Runtime 6.4之前版本存在安全漏洞，该漏洞源于SDM组件生成可预测数字或标识符，可能导致未经身份验证的网络攻击者接管已建立的会话。
Possible ATT&CK Techniques 1 AI
T1133 · External Remote Services
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I. Basic Information for CVE-2025-3449
Vulnerability Information
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Vulnerability Title
Weak Session Token used in Automation Runtime SDM
Source: CVE Program / CVE List V5
Vulnerability Description
A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B&R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
可预测问题
Source: CVE Program / CVE List V5
Vulnerability Title
B&R Automation Runtime 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
B&R Automation Runtime是B&R Automation公司的一个自动化运行时。 B&R Automation Runtime 6.4之前版本存在安全漏洞，该漏洞源于SDM组件生成可预测数字或标识符，可能导致未经身份验证的网络攻击者接管已建立的会话。
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 |
|---|---|---|---|---|
| B&R Industrial Automation GmbH | Automation Runtime | 6.0 ~ 6.4 | - |
|
II. Public POCs for CVE-2025-3449
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: B&R Industrial Automation GmbH
Same weakness: CWE-340
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V. Comments for CVE-2025-3449
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