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Vulnerability record · CVE-2026-42469 · published 1 May 2026

CVE-2026-42469: Openvehicles open vehicle monitoring system firmware stack-based buffer overflow vulnerability

Openvehicles · Open Vehicle Monitoring System Firmware

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.

8.6 CVSS 3.1 High EPSS 0.61% · top 53.2% CWE-121 · Stack-based buffer overflow
8.6CVSS 3.1 base score
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381 Third Party Advisory
https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1391 Issue Tracking

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Source: NIST National Vulnerability Database (record CVE-2026-42469), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.