CVE-2026-37534 | Integer underflow vulnerability in Open-SAE-J1939 thru commi… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-37534
State: PUBLISHED
Assigner: mitre
Reserved: 2026-04-06 00:00 UTC
Published: 2026-05-01 00:00 UTC
Last updated: 2026-05-01 19:06 UTC
Primary CWE: CWE-191
CWE-191 Integer Underflow (Wrap or Wraparound)
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-191	adp	CWE-191 Integer Underflow (Wrap or Wraparound)

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)