EUVD-2026-67273
GHSA-4qwq-727c-3x66
Severity by source
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AV:A per CAN/J1708 adjacency requirement; PR:N and UI:N confirmed by vector; A:H added because ECU crash is explicitly described, contradicting VA:N in the provided 4.0 vector.
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
Lifecycle Timeline
6DescriptionCVE.org
Bendix EC80 Brake ECU is vulnerable to an out-of-bounds write, which could allow an attacker to deliver a payload that could establish an arbitrary write primitive, which could crash the ECU.
AnalysisAI
Out-of-bounds write across all Bendix EC80ESP Brake ECU variants enables an unauthenticated attacker with adjacent vehicle-network access to deliver a crafted payload that establishes an arbitrary write primitive, crashing the safety-critical brake Electronic Control Unit. Reported by ICS-CERT and documented in CISA advisory ICSA-26-237-05, all ten identified EC80ESP hardware configurations are affected with no version constraint specified in the CPE data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be adjacent to the target vehicle's in-vehicle network - specifically the CAN bus, J1708 bus, or another communication channel the EC80ESP ECU monitors - as confirmed by AV:A in the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 7.1 with AV:A/AC:L/AT:N/PR:N/UI:N indicates moderate-to-high technical risk for any attacker who achieves adjacency to the vehicle network, with low exploitation complexity and no authentication barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the CISA ICS advisory ICSA-26-237-05 (https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-05) and the associated CSAF document (https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-05.json) for vendor-supplied firmware patches - exact patched firmware versions are not confirmed in the available data and must be obtained directly from Bendix Commercial Vehicle Systems. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Bendix EC80ESP variants in fleet operation and implement vehicle network access controls or segmentation to restrict adjacent-network connectivity to brake ECUs. …
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More in Ec80Esp J1708
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Hard-coded credentials in the Bendix EC80ESP and EC80ESP+ Brake ECU family allow an adjacent-network attacker to bypass
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
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