Security advisory

{
  "id": "b660dc02c54238da38dd2786ac03d91fa3e46c693d8f64941ca90fe8f3c2be1b",
  "url": "https://osv.dev/vulnerability/CVE-2021-34262",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-34262",
    "summary": "A buffer overflow vulnerability in the USBH_ParseEPDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.",
    "evidence": "osv:CVE-2021-34262",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-34262",
      "aliases": [
        "CVE-2021-34262"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/stmicroelectronics/stm32cubeh7",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "beced99ac090fece04d1e0eb6648b8075e156c6c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:st:stm32cube_middleware:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.8.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.8.0",
            "v1.7.0",
            "v1.6.0",
            "v1.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34262.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:45.047873223Z",
      "provider": "osv",
      "references": [
        "https://github.com/STMicroelectronics/STM32CubeH7/issues/81"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-34262",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386075,
  "published_at": "2021-07-22T20:15:08.253+00:00"
}