{"id":"CVE-2026-73522","summary":"COVESA Open1722 0.9.2 Stack Buffer Overflow via avtp_to_can() in acf-can-listener","details":"COVESA Open1722 through 0.9.2 contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to write past the end of a fixed 15-slot stack array by sending a crafted UDP datagram containing more than 15 ACF-CAN messages. The avtp_to_can() function increments its write index without bounding it against the caller-supplied array size, and because the listener accepts datagrams from any sender matching a hardcoded unauthenticated stream ID transmitted in plaintext, attackers can corrupt adjacent stack memory to achieve arbitrary code execution or denial of service.","modified":"2026-08-20T03:30:22.063025847Z","published":"2026-08-17T17:53:20.700Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-121"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73522.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73522.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73522"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/covesa-open1722-stack-buffer-overflow-via-avtp-to-can-in-acf-can-listener"},{"type":"REPORT","url":"https://github.com/COVESA/Open1722/issues/154"},{"type":"PACKAGE","url":"https://github.com/COVESA/Open1722"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/covesa/open1722","events":[{"introduced":"0"},{"fixed":"473309bda59fc27dcafeb5b817c385cd1e1bc985"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"last_affected":"0.9.2"},{"introduced":"Open1722"},{"fixed":"0.9.2"}]}}],"versions":["v0.9.1","v0.9.0","v0.8.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73522.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}]}