CVE-2025-3449

Weak Session Token used in Automation Runtime SDM

Published Oct 7, 2025 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Br-automation
Br-automation automation Runtime
Vendors & Products Br-automation
Br-automation automation Runtime
Type Values Removed Values 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. 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.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values 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.
Title Weak Session Token used in Automation Runtime SDM
Weaknesses CWE-340
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ABB
Published
Updated
Oct 8, 2025, 1:15 PM
Reserved
Apr 8, 2025, 2:10 PM
Status
Deferred
Published
Oct 7, 2025, 7:15 PM
Modified
Oct 8, 2026, 10:10 PM