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ICS Advisories
Advisories specifically aimed at industrial control systems — from CISA ICS-CERT and directly from vendors (including Siemens, ABB, Schneider Electric, WAGO and Phoenix Contact) — including revision history (initial publication, Update A, Update B) and linked CVEs.
1
Found
Advisory data: live connection— last retrieved: 7 November 2026 at 14:22.
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1 active1 advisories found
VDE-2020-019
Beckhoff: EtherLeak in TwinCAT RT network driver
Risk evaluation
Beckhoff's TwinCAT RT network driver for Intel 8254x and 8255x is providing EtherCAT functionality. The driver implements real-time features. Except for Ethernet frames sent from real-time functionality, all other Ethernet frames sent through the driver are not padded if their payload is less than the minimum Ethernet frame size. Instead, arbitrary memory content is transmitted within in the padding bytes of the frame. Most likely this memory contains slices from previously transmitted or received frames.
Mitigation summary
Beckhoff offers software patches for TwinCAT 3.1 and TwinCAT 2.11 on request. These patches will be included in the the next regular releases to the affected software versions. The advisory will be updated upon availability.
Revision history (4)
Initial publication — 16 June 2020
Initial revision.
Update A — 6 November 2024
Fix: added self-reference
Update B — 11 April 2025
Fix: version range
Update C — 22 May 2025
Fix: added distribution, quotation mark