CVE-2026-37537

HIGH

8.1

Description

collin80/Open-SAE-J1939 thru commit 744024d4306bc387857dfce439558336806acb06 (2023-03-08) contains an integer underflow leading to out-of-bounds write in Transport Protocol Data Transfer handling. At line 23: uint8_t index = data[0] - 1. When data[0] (sequence number from CAN frame) is 0, index underflows to 255. Subsequent write at tp_dt->data[255*7 + i-1] reaches offset 1791, exceeding the MAX_TP_DT buffer (1785 bytes) by 6 bytes.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

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

Attack VectorADJACENT_NETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/1/2026

Last Modified5/1/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-190

References

https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381(cve@mitre.org)

https://github.com/DanielMartensson/Open-SAE-J1939(cve@mitre.org)

https://github.com/collin80/Open-SAE-J1939(cve@mitre.org)

IOC Correlations

No correlations recorded

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