CVE-2025-3449
Weak Session Token used in Automation Runtime SDM
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.
INFO
Published Date :
Oct. 7, 2025, 7:15 p.m.
Last Modified :
Oct. 8, 2025, 7:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 2b718523-d88f-4f37-9bbd-300c20644bf9 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | 2b718523-d88f-4f37-9bbd-300c20644bf9 | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Automation Runtime to version 6.4 or later.
- Apply vendor-provided security patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-3449.
| URL | Resource |
|---|---|
| https://www.br-automation.com/fileadmin/SA25P003-178b6a20.pdf |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-3449 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-3449
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-3449 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-3449 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Oct. 08, 2025
Action Type Old Value New Value Changed Description Generation of Predictable Numbers or Identifiers vulnerability in B&R Industrial Automation Automation Runtime.This issue affects Automation Runtime: from 6.0 before 6.4. 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. -
New CVE Received by [email protected]
Oct. 07, 2025
Action Type Old Value New Value Added Description Generation of Predictable Numbers or Identifiers vulnerability in B&R Industrial Automation Automation Runtime.This issue affects Automation Runtime: from 6.0 before 6.4. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N Added CWE CWE-340 Added Reference https://www.br-automation.com/fileadmin/SA25P003-178b6a20.pdf