Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005.
Priority MEDIUM 43CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00356 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:openvehicles:open_vehicle_monitoring_system_firmware:3.3.005:*:*:*:*:*:*:* | 3.3.005 | Vulnerable | Openvehicles |
| cpe:2.3:h:openvehicles:open_vehicle_monitoring_system:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Openvehicles |
- cpe:2.3:o:openvehicles:open_vehicle_monitoring_system_firmware:3.3.005:*:*:*:*:*:*:* Versions 3.3.005 Vulnerable ·Openvehicles
- cpe:2.3:h:openvehicles:open_vehicle_monitoring_system:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Openvehicles
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42469
- 2026-10-03 Alias added: GHSA-42hh-9f29-4jj6
References
More Openvehicles Open Vehicle Monitoring System Firmware vulnerabilities
- TI-2026-28068 Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. CVSS 3.1CRITICAL 10.0
- TI-2026-30753 Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. CVSS 3.1HIGH 8.8
Sources
- CVE-2026-42469 · CVE Program
- CVE-2026-42469 · NVD
- FIRST EPSS
- GHSA-42hh-9f29-4jj6 · GitHub Advisory Database · CC BY 4.0
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