{
  "cveId": "CVE-2021-1252",
  "url": "https://patchblox.com/security/cve/CVE-2021-1252",
  "summary": "CVE-2021-1252 is fixed in 9 products on 1 platform, first by clamav 0.103.2\u002Bdfsg-0ubuntu0.18.04.1, released April 7, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "clamav: A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103....",
  "description": "A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper error handling that may result in an infinite loop. An attacker could exploit this vulnerability by sending a crafted Excel file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process hang, resulting in a denial of service condition.",
  "published": "2021-04-07T22:15:00Z",
  "severity": "Medium",
  "epss": 0.02516,
  "epssPercentile": 0.84913,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-base",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-base 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-base-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-base",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-base 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-base-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-daemon",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-daemon 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-daemon-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-daemon",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-daemon 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-daemon-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-docs",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-docs 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-docs-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-docs",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-docs 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-docs-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-freshclam 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-freshclam-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-freshclam",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-freshclam 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-freshclam-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-milter 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-milter-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-milter",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-milter 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-milter-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-testfiles",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamav-testfiles 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamav-testfiles-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamav-testfiles",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamav-testfiles 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamav-testfiles-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamdscan",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "clamdscan 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-clamdscan-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "clamdscan",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "clamdscan 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-clamdscan-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libclamav9",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "fix": "libclamav9 0.103.2\u002Bdfsg-0ubuntu0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libclamav9-0.103.2-dfsg-0ubuntu0.18.04.1",
      "released": "2021-04-07T22:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libclamav9",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "fix": "libclamav9 0.103.2\u002Bdfsg-0ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libclamav9-0.103.2-dfsg-0ubuntu0.20.04.1",
      "released": "2021-04-07T22:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}