CVE-2026-37535

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Summary

CVECVE-2026-37535
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 17:16:23 UTC
Updated2026-05-01 20:16:23 UTC
Descriptionopenxc/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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

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

Problem Types: CWE-125 | n/a | CWE-125 CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AC:L/AV:A/A:H/C:L/I:N/PR:N/S:U/UI:N

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
gist.github.com/sgInnora/f4ac66faeefe07a653ceeb3f58cdc381 [email protected] gist.github.com
github.com/openxc/isotp-c [email protected] github.com
github.com/openxc/isotp-c/blob/master/src/isotp/receive.c [email protected] github.com
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