How severe is CVE-2026-42468?

CVE-2026-42468 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42468 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42468?

CVE-2026-42468 affects Openvehicles Open Vehicle Monitoring System Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42468?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42468 have an EU (EUVD) identifier?

Yes. CVE-2026-42468 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26696.

When was CVE-2026-42468 published?

CVE-2026-42468 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-42468

CVE-2026-42468 is a high-severity vulnerability in Openvehicles Open Vehicle Monitoring System Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26696
Weakness: CWE-121
Affected product: Openvehicles Open Vehicle Monitoring System Firmware
Published: 2026-05-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-42468?: CVE-2026-42468 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42468 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42468?: CVE-2026-42468 affects Openvehicles Open Vehicle Monitoring System Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42468?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42468 have an EU (EUVD) identifier?: Yes. CVE-2026-42468 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26696.
When was CVE-2026-42468 published?: CVE-2026-42468 was published on 2026-05-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:openvehicles:open_vehicle_monitoring_system_firmware:3.3.005:*:*:*:*:*:*:*

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