{
  "cveId": "CVE-2025-61661",
  "url": "https://patchblox.com/security/cve/CVE-2025-61661",
  "summary": "CVE-2025-61661 is fixed in 25 products on 1 platform, first by DEBIAN-CVE-2025-61661, released November 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Grub2: grub2: out-of-bounds write via malicious usb device",
  "description": "A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.",
  "published": "2025-11-18T19:15:49Z",
  "severity": "Moderate",
  "cvss": 4.8,
  "cvssVector": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
  "cwe": "Incorrect Calculation of Buffer Size",
  "epss": 0.00208,
  "epssPercentile": 0.10977,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-61661",
  "fixes": [
    {
      "platform": "linux",
      "product": "grub2",
      "release": "Debian 14",
      "fixedVersion": "2.14-1",
      "fix": "DEBIAN-CVE-2025-61661",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-61661",
      "released": "2025-11-18T19:15:49Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "2.12-150600.8.44.2",
      "fix": "SUSE-SU-2025:4196-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4196-1",
      "released": "2025-11-24T10:54:24Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.12-160000.3.1",
      "fix": "OPENSUSE-SU-2025:20163-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2025-20163-1",
      "released": "2025-12-15T12:52:50Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 15.6",
      "fixedVersion": "2.12-150600.8.44.2",
      "fix": "SUSE-SU-2025:4196-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4196-1",
      "released": "2025-11-24T10:54:24Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 15.7",
      "fixedVersion": "2.12-150700.19.19.1",
      "fix": "SUSE-SU-2025:4305-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-4305-1",
      "released": "2025-11-28T13:33:43Z"
    },
    {
      "platform": "linux",
      "product": "grub2",
      "release": "sles 16.0",
      "fixedVersion": "2.12-160000.3.1",
      "fix": "SUSE-SU-2025:21212-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-21212-1",
      "released": "2025-12-15T12:49:56Z"
    },
    {
      "platform": "linux",
      "product": "grub2-common",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-aa64",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-aa64-cdboot",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-aa64-ec2",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-aa64-modules",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-x64",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-x64-cdboot",
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      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-x64-ec2",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-efi-x64-modules",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-emu",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
      "platform": "linux",
      "product": "grub2-emu-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.06-61.amzn2023.0.21",
      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
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      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
    },
    {
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      "fix": "ALAS2023-2025-1342",
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      "fix": "ALAS2023-2025-1342",
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      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
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      "fix": "ALAS2023-2025-1342",
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      "fix": "ALAS2023-2025-1342",
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    {
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      "fix": "ALAS2023-2025-1342",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1342",
      "released": "2026-01-07T18:41:00Z"
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      "released": "2026-01-07T18:41:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}