{
  "cveId": "CVE-2021-45444",
  "url": "https://patchblox.com/security/cve/CVE-2021-45444",
  "summary": "CVE-2021-45444 is fixed in 6 products on 1 platform, first by zsh 5.4.2-3ubuntu3.2, released February 14, 2022. It is not reported as exploited. Patch Radar priority: High.",
  "title": "zsh: The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor",
  "description": "The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more.\n\nSecurity Fix(es):\n\n* zsh: Prompt expansion vulnerability (CVE-2021-45444)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.",
  "published": "2022-02-14T04:15:00Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.0198,
  "epssPercentile": 0.80679,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "5.8-6\u002Bdeb11u1",
      "fix": "DSA-5078-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5078-1",
      "released": "2022-02-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.8.1-1",
      "fix": "DEBIAN-CVE-2021-45444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-45444",
      "released": "2022-02-14T12:15:15Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.8.1-1",
      "fix": "DEBIAN-CVE-2021-45444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-45444",
      "released": "2022-02-14T12:15:15Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Debian 14",
      "fixedVersion": "5.8.1-1",
      "fix": "DEBIAN-CVE-2021-45444",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-45444",
      "released": "2022-02-14T12:15:15Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "RHEL 8",
      "fixedVersion": "0:5.5.1-9.el8",
      "fix": "RHSA-2022:2120",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-2120",
      "released": "2022-05-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.4.2-3ubuntu3.2",
      "fix": "zsh 5.4.2-3ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-zsh-5.4.2-3ubuntu3.2",
      "released": "2022-02-14T04:15:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.8-3ubuntu1.1",
      "fix": "zsh 5.8-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-zsh-5.8-3ubuntu1.1",
      "released": "2022-02-14T04:15:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "almalinux 8",
      "fixedVersion": "5.5.1-9.el8",
      "fix": "ALSA-2022:2120",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-2120",
      "released": "2022-05-10T06:56:22Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "amzn 2023",
      "fixedVersion": "5.8.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-035",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-035",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "ol 8",
      "fixedVersion": "0:5.5.1-9.el8",
      "fix": "ELSA-2022-2120",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-2120",
      "released": "2022-05-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh",
      "release": "rocky 8",
      "fixedVersion": "0:5.5.1-9.el8",
      "fix": "RLSA-2022:2120",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-2120",
      "released": "2022-05-10T06:56:22Z"
    },
    {
      "platform": "linux",
      "product": "zsh-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.4.2-3ubuntu3.2",
      "fix": "zsh-common 5.4.2-3ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-zsh-common-5.4.2-3ubuntu3.2",
      "released": "2022-02-14T04:15:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-common",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.8-3ubuntu1.1",
      "fix": "zsh-common 5.8-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-zsh-common-5.8-3ubuntu1.1",
      "released": "2022-02-14T04:15:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "5.8.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-035",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-035",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "5.8.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-035",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-035",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-html",
      "release": "RHEL 8",
      "fixedVersion": "0:5.5.1-9.el8",
      "fix": "RHSA-2022:2120",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-2120",
      "released": "2022-05-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-html",
      "release": "almalinux 8",
      "fixedVersion": "5.5.1-9.el8",
      "fix": "ALSA-2022:2120",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-2120",
      "released": "2022-05-10T06:56:22Z"
    },
    {
      "platform": "linux",
      "product": "zsh-html",
      "release": "amzn 2023",
      "fixedVersion": "5.8.1-1.amzn2023.0.3",
      "fix": "ALAS2023-2023-035",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-035",
      "released": "2023-02-17T20:44:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-html",
      "release": "ol 8",
      "fixedVersion": "0:5.5.1-9.el8",
      "fix": "ELSA-2022-2120",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-2120",
      "released": "2022-05-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-static",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.4.2-3ubuntu3.2",
      "fix": "zsh-static 5.4.2-3ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-zsh-static-5.4.2-3ubuntu3.2",
      "released": "2022-02-14T04:15:00Z"
    },
    {
      "platform": "linux",
      "product": "zsh-static",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.8-3ubuntu1.1",
      "fix": "zsh-static 5.8-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-zsh-static-5.8-3ubuntu1.1",
      "released": "2022-02-14T04:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}