CVE-2026-42469
Analyzed Analyzed - Analysis Complete
Buffer Overflow in Open Vehicle Monitoring System 3

Publication date: 2026-05-01

Last updated on: 2026-05-20

Assigner: MITRE

Description
Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_canswitch.cpp the parser does not properly validate a CANswitch DLC value, allowing remote attackers to cause a denial of service or possibly execute arbitrary code via crafted CANswitch frames.
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Meta Information
Published
2026-05-01
Last Modified
2026-05-20
Generated
2026-06-16
AI Q&A
2026-05-01
EPSS Evaluated
2026-06-15
NVD
CVE-2026-42469
EUVD
EUVD-2026-26697
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
openvehicles open_vehicle_monitoring_system_firmware 3.3.005
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

This vulnerability is a buffer overflow in the Open Vehicle Monitoring System 3 (OVMS3) version 3.3.005. Specifically, in the file canformat_canswitch.cpp, the parser does not properly validate the CANswitch DLC value. This improper validation allows remote attackers to send specially crafted CANswitch frames that can trigger the buffer overflow.

Impact Analysis

Exploitation of this vulnerability can allow remote attackers to cause a denial of service (DoS) on the affected system. Additionally, it may be possible for attackers to execute arbitrary code, potentially gaining control over the system.

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