Buffer overflow in Openvehicles Open Vehicle Monitoring System
CVE-2026-42468
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
Weakness classification (CWE)
References
- gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381 (Third Party Advisory)
- github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1392 (Issue Tracking)
Frequently asked questions
- What is CVE-2026-42468?
- CVE-2026-42468 is a high-severity vulnerability in Openvehicles Open Vehicle Monitoring System, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-05-01.
- How severe is CVE-2026-42468?
- High severity. CVSS v3 base score is 8.8 out of 10.