CVE-2026-42469

HIGH

Open Vehicle Monitoring System 3.3.005 - Buffer Overflow

Title source: llm

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.

References (2)

Core 2

Core References

https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381

https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1391

Scores

CVSS v3 8.6

EPSS 0.0036

EPSS Percentile 27.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-121

Status published

Products (1)

openvehicles/open_vehicle_monitoring_system_firmware 3.3.005

Published May 01, 2026

Tracked Since May 01, 2026