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CVE-2026-37534 is an integer underflow vulnerability in Open-SAE-J1939 affecting versions through commit b6caf884df46435e539b1ecbf92b6c29b345bdfe (2025-11-30). The flaw is in SAE_J1939_Read_Transport_Protocol_Data_Transfer, where J1939 transport-protocol message parsing mishandles a size-minus-overhead calculation when processing malformed CAN frames. A crafted sequence number in a CAN frame can cause the subtraction to wrap, and the resulting wrapped value is then used in subsequent memory operations, leading to an out-of-bounds/arbitrary memory write.
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No public exploit code observed for this vulnerability.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.