{
  "cveId": "CVE-2026-94056",
  "url": "https://patchblox.com/security/cve/CVE-2026-94056",
  "summary": "CVE-2026-94056 is fixed in 17 products on 1 platform, first by exim4 4.99.1-1ubuntu1.5, released September 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "exim4: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain...",
  "description": "Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.",
  "published": "2026-09-19T16:17:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
  "epss": 0.00238,
  "epssPercentile": 0.14958,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "exim",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-clamav",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-greylist",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-mon",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-mon-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-mysql",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-mysql-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-pgsql",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim-pgsql-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.100.1-1.fc43",
      "fix": "FEDORA-2026-D202B74C6A",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d202b74c6a",
      "released": "2026-10-06T15:38:49Z"
    },
    {
      "platform": "linux",
      "product": "exim4",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.98.2-1\u002Bdeb13u5",
      "fix": "DEBIAN-CVE-2026-94056",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-94056",
      "released": "2026-09-25T19:41:43Z"
    },
    {
      "platform": "linux",
      "product": "exim4",
      "release": "Debian 14",
      "fixedVersion": "4.100.1-1",
      "fix": "DEBIAN-CVE-2026-94056",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-94056",
      "released": "2026-09-25T19:41:43Z"
    },
    {
      "platform": "linux",
      "product": "exim4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "exim4 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-exim4-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "exim4",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "exim4 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-exim4-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "exim4",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "exim4 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-exim4-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "exim4-base",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "exim4-base 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "exim4-base",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "exim4-base 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "exim4-base",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "exim4-base 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "exim4-config",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "exim4-config 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-exim4-config-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "exim4-config",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "exim4-config 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-exim4-config-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "exim4-config",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "exim4-config 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-exim4-config-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-heavy",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "exim4-daemon-heavy 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-exim4-daemon-heavy-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-heavy",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "exim4-daemon-heavy 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-exim4-daemon-heavy-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-heavy",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "exim4-daemon-heavy 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-exim4-daemon-heavy-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-light",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "exim4-daemon-light 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-exim4-daemon-light-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-light",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "exim4-daemon-light 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-exim4-daemon-light-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "exim4-daemon-light",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "exim4-daemon-light 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-exim4-daemon-light-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "eximon4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.95-4ubuntu2.12",
      "fix": "eximon4 4.95-4ubuntu2.12",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-eximon4-4.95-4ubuntu2.12",
      "released": "2026-09-29T20:26:54Z"
    },
    {
      "platform": "linux",
      "product": "eximon4",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "4.97-4ubuntu4.8",
      "fix": "eximon4 4.97-4ubuntu4.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-eximon4-4.97-4ubuntu4.8",
      "released": "2026-09-29T20:26:56Z"
    },
    {
      "platform": "linux",
      "product": "eximon4",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "4.99.1-1ubuntu1.5",
      "fix": "eximon4 4.99.1-1ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-eximon4-4.99.1-1ubuntu1.5",
      "released": "2026-09-19T16:17:00Z"
    }
  ],
  "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"
  }
}