# CISA Warns of Bendix EC80 Brake ECU Flaws

Published: 2026-08-25 · Severity: routine · Sectors: transportation
Canonical: https://vorant.io/reports/758e42a6-5bf1-55c6-b677-28cdb33c0ccd/cisa-warns-of-bendix-ec80-brake-ecu-flaws

> CISA disclosed three vulnerabilities in Bendix EC80 truck brake ECUs that could let an attacker crash the unit, execute code, or disable traction control.

CISA published an ICS advisory detailing three vulnerabilities affecting Bendix EC80 Brake ECU firmware used in commercial vehicles across the United States and Canada. The most severe, CVE-2026-67560, is a stack-based buffer overflow that could allow an attacker to crash the ECU and potentially achieve remote code execution or inject arbitrary CAN bus traffic, impacting ABS, steering assist, speedometer, and shifting functions. A second flaw, CVE-2026-68967, is an out-of-bounds write that could enable an arbitrary write primitive leading to ECU crash. The third, CVE-2026-71396, involves hard-coded credentials that could be leveraged to disable automatic traction control.

The affected products span multiple EC80ESP and EC80ESP+ variants across several firmware baselines. Bendix has released patched firmware versions (Z300822, Z302578, Z302579) for the respective product lines, and CISA recommends immediate updates along with standard ICS network isolation practices—segmenting control system networks from business networks and the internet, and using VPNs for any required remote access. These vulnerabilities were responsibly disclosed by Ben Gardiner of NMFTA, and CISA states no known public exploitation has been reported at this time.

Given the safety-critical nature of brake and traction-control systems in commercial trucking, this advisory carries operational safety implications for the transportation sector even absent confirmed in-the-wild exploitation. Fleet operators and maintenance providers using affected Bendix EC80 units should prioritize firmware updates and verify CAN bus network segmentation as part of standard vehicle cybersecurity hygiene.

## Mentioned in this report

- Vulnerabilities: CVE-2026-67560, CVE-2026-68967, CVE-2026-71396

Source reporting: https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-05

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