Security advisory

{
  "id": "aa498e04c79e5e1bb5b51b4d27536e6bc83061cdd1c7f57e4f2708ada6c89e8b",
  "url": "https://osv.dev/vulnerability/CVE-2021-28211",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-28211",
    "summary": "A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.",
    "evidence": "osv:CVE-2021-28211",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-28211",
      "aliases": [
        "CVE-2021-28211"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tianocore/edk2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "06dc822d045c2bb42e497487935485302486e151"
                },
                {
                  "last_affected": "06dc822d045c2bb42e497487935485302486e151"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tianocore:edk2:202008:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "202008"
                      },
                      {
                        "last_affected": "202008"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "202008",
            "edk2-stable202008"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28211.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:25.120578207Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.tianocore.org/show_bug.cgi?id=1816"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-28211",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431301,
  "published_at": "2021-06-11T16:15:12.503+00:00"
}