CVE-2025-3449
mediumpriority · track · 0EPSS 0.002 · 8 %ileCHEUUSEPSS · scored 2026-10-24
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedAutomation Runtimeabb_psirt
The problem is corrected in Automation Runtime 6.4. The System Diagnostic Manager (SDM) is disabled by default in Automation Runtime 6 and is not intended be enabled on active systems located outside properly secured production networks or in facilities lacking adequate physical and logical access controls to prevent any form of unauthorized interaction. For customers who use SDM on their systems, B&R recommends applying the update based on risk assessment at the earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.
- FixedAutomation Runtimecisa_csaf_ot
The problem is corrected in Automation Runtime 6.4. The System Diagnostic Manager (SDM) is disabled by default in Automation Runtime 6 and is not intended be enabled on active systems located outside properly secured production networks or in facilities lacking adequate physical and logical access controls to prevent any form of unauthorized interaction. For customers who use SDM on their systems, B&R recommends applying the update based on risk assessment at the earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 0.6–4.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (8)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- SA25P003B&R Automation Runtime Vulnerabilities in System Diagnostic Manager (SDM)2025-10-07csaf · abb_psirtCH
An update is available that resolves a vulnerability identified by B&Rs internal security analysis in the product versions listed as affected in this advisory. An attacker who successfully exploited these vulnerabilities could take over a remote session or execute code in the context of the user’s browser session.
- ICSA-26-141-04ABB B&R Automation Runtime2025-10-07icsa · cisa_csaf_otUS
An update is available that resolves a vulnerability identified by B&Rs internal security analysis in the product versions listed as affected in this advisory. An attacker who successfully exploited these vulnerabilities could take over a remote session or execute code in the context of the user’s browser session.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3)
External citations — patches, advisories, analysis.
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan