CVE-2026-6889: Vulnerability in Advantech ECU-1251D
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.
CVE-2026-6889: Vulnerability in Advantech ECU-1251D
Description
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.
CVSS v4.0
Score 6.9medium
Affected software
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CSA
- Date Reserved
- 2026-04-23T02:58:22.972Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6c0df79c2644c7f830876c
Added to database: 07/31/2026, 02:52:39 UTC
Last updated: 07/31/2026, 03:44:15 UTC
Views: 5
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