CVE-2026-73523 — COVESA Open1722 0.9.2 Stack Memory Disclosure via acf-can-listener.c Integer Truncation
COVESA Open1722 through 0.9.2 contains an integer truncation vulnerability in acf-can-listener.c that allows unauthenticated remote attackers to cause the CAN listener to transm…
Published: 2026-08-17 · CVSS: 8.7 · CVSS 4.0
COVESA Open1722 through 0.9.2 contains an integer truncation vulnerability in acf-can-listener.c that allows unauthenticated remote attackers to cause the CAN listener to transmit process stack memory onto the CAN bus by sending a rejected UDP datagram with a matching AVTP stream ID. The num_can_msgs variable declared as uint8_t truncates the -1 error return value from avtp_to_can() to 255, causing a write loop to iterate 255 times over a 15-slot stack array and leak approximately 18 KB of adjacent stack memory as roughly 240 CAN frames to any recipient on the CAN bus.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7