How severe is CVE-2026-37541?

CVE-2026-37541 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-37541 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-37541?

CVE-2026-37541 affects Openvehicles Open Vehicle Monitoring System Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-37541?

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

Does CVE-2026-37541 have an EU (EUVD) identifier?

Yes. CVE-2026-37541 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26694.

When was CVE-2026-37541 published?

CVE-2026-37541 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-37541

CVE-2026-37541 is a critical-severity vulnerability in Openvehicles Open Vehicle Monitoring System Firmware with a CVSS 3.x base score of 10.0. 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: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26694
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_gvret.cpp, the length field in GVRET binary data is not properly validated, allowing remote attackers to cause a denial of service or possibly execute arbitrary code via crafted GVRET frames.

Frequently asked questions

What is CVE-2026-37541?: Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_gvret.cpp, the length field in GVRET binary data is not properly validated, allowing remote attackers to cause a denial of service or possibly execute arbitrary code via crafted GVRET frames.
How severe is CVE-2026-37541?: CVE-2026-37541 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-37541 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-37541?: CVE-2026-37541 affects Openvehicles Open Vehicle Monitoring System Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-37541?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-37541 have an EU (EUVD) identifier?: Yes. CVE-2026-37541 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26694.
When was CVE-2026-37541 published?: CVE-2026-37541 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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