Advantech ECU-1251D 08.04 resource consumption

Summaryinfo

A vulnerability described as critical has been identified in Advantech ECU-1251D 08.04. The affected element is an unknown function. The manipulation results in resource consumption. This vulnerability is cataloged as CVE-2026-6889. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Advantech ECU-1251D 08.04. Affected is an unknown code block. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

A denial of service vulnerability in the Advantech ECU-1251D allows a network-adjacent attacker to send a DNP3 signal to the Digital Output address of the device, causing the DNP3Daemon to invoke a non-existent system file and enter an indefinite restart loop. While the device remains partially accessible via its web panel or direct signals, an operator using SCADA TelWin is unable to reconnect until the device is manually restarted.

The advisory is shared for download at csa.gov.sg. This vulnerability is traded as CVE-2026-6889 since 04/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Advantech

Name

• ECU-1251D

Version

• 08.04

License

• commercial

Website

• Vendor: https://www.advantech.com/

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