{
  "cveId": "CVE-2026-3949",
  "url": "https://patchblox.com/security/cve/CVE-2026-3949",
  "summary": "CVE-2026-3949 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2026-3949, released March 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libheif: A vulnerability was determined in strukturag libheif up to 1.21.2",
  "description": "A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.",
  "published": "2026-03-11T19:16:05Z",
  "severity": "low",
  "epss": 0.00137,
  "epssPercentile": 0.0316,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "heif-pixbuf-loader",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "heif-pixbuf-loader-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.23.1-1",
      "fix": "DEBIAN-CVE-2026-3949",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-3949",
      "released": "2026-03-11T19:16:05Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "Debian 14",
      "fixedVersion": "1.23.1-1",
      "fix": "DEBIAN-CVE-2026-3949",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-3949",
      "released": "2026-03-11T19:16:05Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.23.0-160000.1.1",
      "fix": "OPENSUSE-SU-2026:20974-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20974-1",
      "released": "2026-06-17T08:37:36Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "sles 15.7",
      "fixedVersion": "1.23.0-150700.3.15.1",
      "fix": "SUSE-SU-2026:2622-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2622-1",
      "released": "2026-06-24T11:55:36Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "sles 16.0",
      "fixedVersion": "1.23.0-160000.1.1",
      "fix": "SUSE-SU-2026:22153-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22153-1",
      "released": "2026-06-17T08:36:56Z"
    },
    {
      "platform": "linux",
      "product": "libheif-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-devel",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-tools",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.19.8-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1509",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1509",
      "released": "2026-03-30T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}