CVE-2026-42468 — HIGH (8.8)

Vulnerability Description

Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_pcap.cpp , the parser's phdr.len field is not properly validated, allowing remote attackers to cause a denial of service or possibly execute arbitrary code via crafted PCAP input.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

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/1392Issue Tracking

FAQ

What is CVE-2026-42468?

CVE-2026-42468 is a vulnerability with a CVSS score of 8.8 (HIGH). Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_pcap.cpp , the parser's phdr.len field is not properly validated, allowing remote attackers to cause a d...

How severe is CVE-2026-42468?

CVE-2026-42468 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-42468?

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.