CVE-2026-37535

HIGH

7.1

Description

openxc/isotp-c thru commit 5a5d19245f65189202719321facd49ce6f5d46ac (2021-08-09) contains an out-of-bounds read in the ISO-TP Single Frame receive handler, where the 4-bit payload length nibble is used directly as the memcpy size without validating it against the actual CAN data length. A malicious CAN frame with an oversized length nibble can cause memory reads beyond the buffer, allowing attackers to cause a denial of service, or gain sensitive information.

CVE Details

CVSS v3.1 Score7.1

SeverityHIGH

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

Attack VectorADJACENT_NETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/1/2026

Last Modified5/1/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125

References

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

https://github.com/openxc/isotp-c(cve@mitre.org)

https://github.com/openxc/isotp-c/blob/master/src/isotp/receive.c(cve@mitre.org)

IOC Correlations

No correlations recorded

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