{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.17.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "d6f12ad1c4f70ad3230afd7d86e971421e02fef4"
            }
          ],
          "repo": "https://github.com/px4/px4-autopilot",
          "type": "GIT"
        }
      ]
    }
  ],
  "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"
  },
  "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.",
  "id": "CVE-2026-84698",
  "modified": "2026-09-05T03:30:38.010491569Z",
  "published": "2026-09-02T00:37:53.694Z",
  "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"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PX4 Autopilot sd_bench Heap Buffer Overflow via Block Size"
}