CVE-2026-37534

Integer underflow in Open‑SAE‑J1939 allows arbitrary memory write via crafted CAN frames

Published May 1, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Integer underflow vulnerability in Open-SAE-J1939 thru commit b6caf884df46435e539b1ecbf92b6c29b345bdfe (2025-11-30) in SAE_J1939_Read_Transport_Protocol_Data_Transfer,allows attackers to write to arbitrary memory via crafted sequence number from the CAN frame.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Danielmartensson
Danielmartensson open-sae-j1939
Vendors & Products Danielmartensson
Danielmartensson open-sae-j1939
Type Values Removed Values Added
Title Integer underflow in Open‑SAE‑J1939 allows arbitrary memory write via crafted CAN frames
Type Values Removed Values Added
Weaknesses CWE-191
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Integer underflow vulnerability in Open-SAE-J1939 thru commit b6caf884df46435e539b1ecbf92b6c29b345bdfe (2025-11-30) in SAE_J1939_Read_Transport_Protocol_Data_Transfer,allows attackers to write to arbitrary memory via crafted sequence number from the CAN frame.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 1, 2026, 7:06 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Awaiting Analysis
Published
May 1, 2026, 5:16 PM
Modified
Jun 17, 2026, 10:41 AM