{"id":"CVE-2026-73522","state":"PUBLISHED","title":"COVESA Open1722 0.9.2 Stack Buffer Overflow via avtp_to_can() in acf-can-listener","description":"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.","publishedAt":"2026-08-17T17:53:20.700Z","updatedAt":"2026-08-18T14:53:19.674Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["COVESA Open1722"],"affected":[{"vendor":"COVESA","product":"Open1722","packageURL":"pkg:github/COVESA/Open1722","defaultStatus":"affected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.9.2","versionType":"semver"}],"repo":"https://github.com/COVESA/Open1722"}],"references":["https://github.com/COVESA/Open1722/issues/154","https://www.vulncheck.com/advisories/covesa-open1722-stack-buffer-overflow-via-avtp-to-can-in-acf-can-listener"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73522.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73522","state":"PUBLISHED","datePublished":"2026-08-17T17:53:20.700Z","dateUpdated":"2026-08-18T14:53:19.674Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-12T19:29:19.866Z"},"containers":{"cna":{"title":"COVESA Open1722 0.9.2 Stack Buffer Overflow via avtp_to_can() in acf-can-listener","descriptions":[{"lang":"en","value":"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. 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