CVE-2025-11482 PUBLISHED

Allocation of Resources Without Limits or Throttling in the OPC-UA Server

Assigner: ABB
Reserved: 08.10.2025 Published: 26.05.2026 Updated: 26.05.2026

An Allocation of Resources Without Limits or Throttling vulnerability in the OPC-UA Server used in PPT30 Operating System versions before 1.8.0 may be used by an unauthenticated network-based attacker to permanently prevent legitimate users from interacting with the service.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	B&R Industrial Automation GmbH
Product	PPT30 Operating System
Versions	Default: unaffected affected from 0 to 1.8.0 (excl.)

References

https://br-cws-assets.de-fra-1.linodeobjects.com/SA25P006-0eec719c.pdf

Problem Types

CWE-770 Allocation of resources without limits or throttling CWE