{
  "cveId": "CVE-2026-20217",
  "url": "https://patchblox.com/security/cve/CVE-2026-20217",
  "summary": "CVE-2026-20217 is fixed in 51 products on 1 platform, first by clamav 1.5.3\u002Bdfsg-0ubuntu0.26.04.1, released July 1, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability",
  "description": "This update for clamav fixes the following issues\n\n- CVE-2026-20213: PE file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  (bsc#1270107).\n- CVE-2026-20214: FSG file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  (bsc#1270085).\n- CVE-2026-20215: 7z file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  (bsc#1270088).\n- CVE-2026-20216: InstallShield file format parser could allow an unauthenticated, remote attacker to cause a denial of\n  service (bsc#1270089).\n- CVE-2026-20217: PESpin file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  (bsc#1270091).\n- CVE-2026-20243: ALZ file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  (bsc#1270092).\n- CVE-2026-20244: DMG file format parser could allow an unauthenticated, remote attacker to cause a denial of service\n  on 32-bit platforms only (bsc#1270106).\n- CVE-2026-41676: rust-openssl: \u0060Deriver:derive\u0060 and \u0060PkeyCtxRef:derive\u0060 can overflow short buffers on OpenSSL 1.1.1\n  (bsc#1270138).\n\nChanges for clamav:\n\n- update to 1.5.3:\n    \n * Hardened clamscan, clamdscan, and clamonacc quarantine actions against\n time-of-check/time-of-use races that could redirect copied, moved, or removed\n files under unsafe quarantine directory configurations.\n * Raised the minimum required CMake version to 3.17 to fix Linux builds with\n libcurl v8.21.0 when linking static library dependencies.\n * Metadata preclass scans now run before the final scan verdict.\n * ClamOnAcc: Fixed errors when recursively excluded paths are children of an\n included path.\n * ClamOnAcc: Fixed hash bucket list corruption when two watched paths collide\n in the same bucket.",
  "published": "2026-07-01T17:00:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
  "epss": 0.00573,
  "epssPercentile": 0.47622,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20217",
  "fixes": [
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.4.6\u002Bdfsg-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-20217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-20217",
      "released": "2026-07-14T16:28:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Debian 14",
      "fixedVersion": "1.4.5\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-20217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-20217",
      "released": "2026-07-14T16:28:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.5.3-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21252-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21252-1",
      "released": "2026-07-07T16:59:27Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "sles 15.6",
      "fixedVersion": "1.5.3-150600.18.28.1",
      "fix": "SUSE-SU-2026:2835-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2835-1",
      "released": "2026-07-09T19:13:18Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "sles 15.7",
      "fixedVersion": "1.5.3-150600.18.28.1",
      "fix": "SUSE-SU-2026:2835-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2835-1",
      "released": "2026-07-09T19:13:18Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "sles 16.0",
      "fixedVersion": "1.5.3-160000.1.1",
      "fix": "SUSE-SU-2026:22574-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22574-1",
      "released": "2026-07-07T16:57:40Z"
    },
    {
      "platform": "linux",
      "product": "clamav-base",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-base 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-base-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav-base",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav-base 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-base-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-base",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav-base 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-base-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-daemon",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-daemon 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-daemon-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav-daemon",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav-daemon 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-daemon-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-daemon",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav-daemon 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-daemon-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-data",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-devel",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-doc",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-docs",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-docs 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-docs-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-21T13:07:13Z"
    },
    {
      "platform": "linux",
      "product": "clamav-docs",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav-docs 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-docs-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-21T13:07:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-docs",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav-docs 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-docs-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-filesystem",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-freshclam 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-freshclam-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav-freshclam 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-freshclam-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav-freshclam 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-freshclam-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-lib",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-lib-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-milter 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-milter-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Ubuntu 24.04.5 LTS (noble)",
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      "fix": "clamav-milter 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-milter-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
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      "fix": "clamav-milter 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-milter-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "1.4.6-1.fc43",
      "fix": "FEDORA-2026-A9BEEC8485",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9beec8485",
      "released": "2026-08-10T15:57:38Z"
    },
    {
      "platform": "linux",
      "product": "clamav-testfiles",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "fix": "clamav-testfiles 1.5.3\u002Bdfsg-0ubuntu0.22.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-clamav-testfiles-1.5.3-dfsg-0ubuntu0.22.04.2",
      "released": "2026-07-09T15:45:16Z"
    },
    {
      "platform": "linux",
      "product": "clamav-testfiles",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "fix": "clamav-testfiles 1.5.3\u002Bdfsg-0ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-clamav-testfiles-1.5.3-dfsg-0ubuntu0.24.04.1",
      "released": "2026-07-09T15:45:19Z"
    },
    {
      "platform": "linux",
      "product": "clamav-testfiles",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "fix": "clamav-testfiles 1.5.3\u002Bdfsg-0ubuntu0.26.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-clamav-testfiles-1.5.3-dfsg-0ubuntu0.26.04.1",
      "released": "2026-07-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav1.4",
      "release": "amzn 2023",
      "fixedVersion": "1.4.5-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1956",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1956",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav1.4-data",
      "release": "amzn 2023",
      "fixedVersion": "1.4.5-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1956",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1956",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav1.4-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.4.5-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1956",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1956",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav1.4-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.4.5-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1956",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1956",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav1.4-devel",
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