Government Advisory

Critical Flaws Found in Bendix Truck Brake Control Systems

CISA · 25 Aug 2026

Key Takeaway If your business operates commercial trucks, check with your fleet supplier whether their vehicles use affected Bendix EC80 brake systems and apply any recommended updates promptly.

The US Cybersecurity and Infrastructure Security Agency (CISA) has issued an advisory covering multiple Bendix EC80 Brake ECU models, a component widely used in commercial trucks within the transportation sector. The vulnerabilities include a stack-based buffer overflow, an out-of-bounds write flaw, and the use of hard-coded credentials, each carrying a CVSS score of 7.5, indicating a high severity risk.

If exploited, these weaknesses could allow an attacker to disrupt or disable key vehicle safety systems, including anti-lock braking (ABS), steering assist, speedometer readings, gear shifting, and automatic traction control. Given that brake and stability systems are essential to vehicle safety, this poses a significant operational and safety risk for businesses that operate or maintain commercial fleets fitted with the affected ECU models.

While this advisory concerns specialised industrial equipment rather than typical office IT systems, Australian small businesses with logistics, transport, or fleet operations should take note. Any organisation using vehicles fitted with Bendix EC80 systems should check with their fleet maintenance provider or vehicle manufacturer about available firmware updates or mitigations.

ICS security fleet safety CISA advisory transportation sector vulnerability

Summarised by CISO AI from CISA. We link back to every original so you can read it yourself.