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.
Affected products
openvehicles: open vehicle monitoring system firmware; openvehicles: open vehicle monitoring system
References2
- gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381 Third Party Advisory
- github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues… Issue Tracking
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H - EPSS — exploit probability
- 0% percentile: 30 · as of 13 November 2026
- CWE
- CWE-121
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