CVE-2026-42469 — HIGH (8.6)

Vulnerability 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 Score

8.6

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

HIGH

Affected Products

Vendor	Product	Versions
Openvehicles	Open Vehicle Monitoring System Firmware	3.3.005
Openvehicles	Open Vehicle Monitoring System	-

Related Weaknesses (CWE)

CWE-121

References

https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381Third Party Advisory
https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1391Issue Tracking

FAQ

What is CVE-2026-42469?

CVE-2026-42469 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 ...

How severe is CVE-2026-42469?

CVE-2026-42469 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-42469?

Check the references section above for vendor advisories and patch information. Affected products include: Openvehicles Open Vehicle Monitoring System Firmware, Openvehicles Open Vehicle Monitoring System.