CVE-2026-42469

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Summary

CVECVE-2026-42469
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 17:16:25 UTC
Updated2026-05-07 19:16:02 UTC
DescriptionBuffer 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.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

EPSS: 0.002430000 probability, percentile 0.474950000 (date 2026-05-12)

Problem Types: CWE-121 | n/a | CWE-121 CWE-121 Stack-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1391 [email protected] github.com
gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381 [email protected] gist.github.com
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