CVE-2026-37537HIGH 8.1EPSS p12.3%

CVE-2026-37537CVE-2026-37537

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.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS0.22% probability of exploitation · percentile 12.3% · 2026-06-18T12:00:27Z
Published2026-05-01
Last modified2026-05-07

Underlying weaknesses· 1

CWE-190

References

  1. https://gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381
  2. https://github.com/DanielMartensson/Open-SAE-J1939
  3. https://github.com/collin80/Open-SAE-J1939

1

TypeTargetConfidenceTier
WeaknessInteger Overflow or Wraparoundcwe-1900%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.