{"id":"CVE-2026-84698","summary":"PX4 Autopilot sd_bench Heap Buffer Overflow via Block Size","details":"PX4 Autopilot contains a heap buffer overflow vulnerability in the sd_bench command that writes a four-byte block number into a user-supplied sized allocation. Attackers can invoke sd_bench with a block size below four bytes to overflow the heap buffer and potentially execute code or crash the system.","modified":"2026-09-04T11:30:15.012026137Z","published":"2026-09-02T00:37:53.694Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84698.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84698.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84698"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/px4-autopilot-sd-bench-heap-buffer-overflow-via-block-size"},{"type":"REPORT","url":"https://github.com/PX4/PX4-Autopilot/issues/28373"},{"type":"PACKAGE","url":"https://github.com/PX4/PX4-Autopilot"},{"type":"ARTICLE","url":"https://github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/systemcmds/sd_bench/sd_bench.cpp"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/px4/px4-autopilot","events":[{"introduced":"0"},{"last_affected":"d6f12ad1c4f70ad3230afd7d86e971421e02fef4"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.17.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.17.0","v1.17.0-rc2","v1.17.0-rc1","v1.17.0-beta1","v1.17.0-alpha1","v1.16.0-rc1","v1.16.0-beta1","v1.16.0-alpha2","v1.16.0-alpha1","v1.15.0-beta1","v1.15.0-alpha1","v1.14.0-beta2","v1.14.0-beta1","v1.13.0-beta1","v1.12.0-rc1","v1.12.0","v1.13.0-alpha1","v1.12.0-beta6","v1.12.0-beta5","v1.12.0-beta4","v1.12.0-beta3","v1.12.0-beta2","v1.11.0-rc3","v1.11.0-rc2","v1.11.0-rc1","v1.11.0-beta2","v1.11.0-beta1","v1.10.0-beta4","v1.10.0-beta3","v1.10.0-beta2","v1.10.0-beta1","v1.9.0-rc2","v1.9.0","v1.9.0-rc1","v1.9.0-rc0","v1.9.0-beta3","v1.9.0-beta2","v1.9.0-beta1","v1.9.0-alpha","v1.8.0","v1.8.0-rc0","v1.8.0-beta2","v1.8.0-beta1","v1.7.4beta","v1.7.3","v1.7.3beta","v1.7.2","v1.7.1","v1.7.0","v1.7.0-rc4","v1.7.0-rc3","v1.7.0-rc2","v1.7.0-rc1","v1.7.0-rc0","v1.6.5","v1.6.4","v1.6.2","v1.6.0-rc4","v1.6.0-rc3","v1.6.0-rc2","v1.6.0rc1","v1.5.2","v1.5.1","v1.5.1rc4","v1.5.1rc3","v1.5.1rc2","v1.5.0","v1.4.4rc1","v1.4.3","v1.4.2","v1.4.1","v1.4.1rc4","v1.4.1rc3","v1.4.1rc2","v1.4.1rc1","v1.4.0rc4","v1.4.0rc3","v1.4.0rc2","v1.4.0rc1","v1.3.2","v1.3.0rc3","v1.3.0rc2","v1.3.0rc1","v1.1.3","v1.1.2","v1.1.1","v1.1.0beta3","v1.1.0beta1","v1.0.0beta2","v1.0.0rc12","v1.0.0rc9","v1.0.0rc10","v1.0.0rc8","v1.0.0rc7","v1.0.0-rc3","v1.0.0-rc2","v1.0.0-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84698.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}