{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.0.1000.0"
              },
              {
                "fixed": "6.0.1698.0"
              },
              {
                "introduced": "0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "626d820c5f48daab54653dec3bc8eba76e976919"
            },
            {
              "fixed": "28b2bc47eaa37f56c670c72401d97fb1178e87b8"
            }
          ],
          "repo": "https://github.com/m2team/nanazip",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mqqj-crf3-6q37"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125",
      "CWE-191"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47222.json"
  },
  "details": "NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 3.0.1000.0 to before version 6.0.1698.0, a heap out-of-bounds read exists in the Android Verified Boot (AVB) vbmeta image parser in NanaZip (via the upstream 7-Zip AvbHandler). An unsigned integer underflow in a bounds check allows an attacker-controlled value_num_bytes field to pass validation, causing AddNameToString to read up to ~4 GiB past the end of a 64 KiB heap buffer. This causes a deterministic crash (denial of service) when opening a crafted .avb or .img file. This issue has been patched in stable version 6.0.1698.0 and preview version 6.5.1742.0.",
  "id": "CVE-2026-47222",
  "modified": "2026-07-15T01:49:13.660143942Z",
  "published": "2026-06-12T16:56:47.501Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47222.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/M2Team/NanaZip/security/advisories/GHSA-mqqj-crf3-6q37"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47222"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NanaZip: Heap out-of-bounds read in NanaZip AVB property descriptor parser via unsigned integer underflow"
}