{"id":"CVE-2026-74238","summary":"TIER IV Nebula 1.2.0 Heap Out-of-Bounds Read via VLP32 UDP Decoder","details":"TIER IV Nebula through 1.2.0 contains an out-of-bounds read vulnerability in the Vlp32Decoder::unpack() function that allows unauthenticated remote attackers to cause the decoder to read past the end of a received UDP buffer into adjacent heap memory by sending a short UDP datagram. Attackers can send a malformed datagram to the Velodyne UDP sensor port, which lacks sender-address restrictions present in other drivers, causing fabricated points derived from heap memory contents to be silently published into downstream PointCloud2 messages consumed by Autoware nodes.","modified":"2026-08-22T03:31:20.102356288Z","published":"2026-08-17T18:12:37.894Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74238.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74238.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74238"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/tier-iv-nebula-heap-out-of-bounds-read-via-vlp32-udp-decoder"},{"type":"REPORT","url":"https://github.com/tier4/nebula/issues/488"},{"type":"PACKAGE","url":"https://github.com/tier4/nebula"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tier4/nebula","events":[{"introduced":"0"},{"fixed":"c9721ebfb1ec929057f4371b309fc9bc759be80a"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.2.0"},{"fixed":"1.2.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v1.1.1","v1.1.0","v1.0.0","v0.4.0","v0.3.2.2","v0.3.2.1","v0.3.2","v0.2.15.1","v0.3.1","v0.3.0","v0.2.15","v0.2.14","v0.2.13","v0.2.12","v0.2.4","v0.2.11","v0.2.10","v0.2.9","v0.2.8","v0.2.7.1","v0.2.6.1","v0.2.7","v0.2.5.1","v0.2.6","v0.2.5","v0.2.3","v0.0.1","v0.2.2","v0.2.1","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74238.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"}]}