{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 2026.4.1.1"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "directxtk_desktop_win10"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.5.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 2026.4.1.1"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "directxtk_uwp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.5.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T15:38:15Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe spritefont reader can be induced to perform a 32-bit overflow multiply that could in theory result in a RCE.\n\nThis impacts the use of the *DirectX Tool Kit* **SpriteFont** class file loading ctor if given untrusted data files.\n\n\u003e Note this only applies to x86/ARM builds of the library. ARM64 and x64 native is not subject to this issue.\n\n### Patches\nThis bug has been fixed in the May 7, 2026 release. Alternatively, users can update their copy of the reader as per [this commit](https://github.com/microsoft/DirectXTK/commit/ef1bd5d7f492c39dd0cd87493ba8ea38725c9791).\n\n### Workarounds\nThis does not apply if a project\u0027s .spritefont files are all \u0027trusted\u0027 data that were included with an application. It\u0027s primarily an issue only if developers are using user-provided or network downloaded spritefont files.",
  "id": "GHSA-c55g-rp4x-fx84",
  "modified": "2026-05-18T15:38:15Z",
  "published": "2026-05-18T15:38:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/DirectXTK/security/advisories/GHSA-c55g-rp4x-fx84"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/DirectXTK/commit/ef1bd5d7f492c39dd0cd87493ba8ea38725c9791"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/microsoft/DirectXTK"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/DirectXTK/releases/tag/may2026"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Microsoft DirectX: .spritefont multiply overflow only in 32-bit builds"
}