{
  "cveId": "CVE-2025-40775",
  "url": "https://patchblox.com/security/cve/CVE-2025-40775",
  "summary": "CVE-2025-40775 is fixed in 8 products on 1 platform, first by bind9 1:9.20.0-2ubuntu3.2, released May 21, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "DNS message with invalid TSIG causes an assertion failure",
  "description": "When an incoming DNS protocol message includes a Transaction Signature(TSIG), BIND always checks it.  If the TSIG contains an invalid value inthe algorithm field, BIND immediately aborts with an assertion failure.This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through9.21.7.",
  "published": "2025-05-21T00:00:00Z",
  "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": "Improper Handling of Undefined Values",
  "epss": 0.15312,
  "epssPercentile": 0.96792,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40775",
  "fixes": [
    {
      "platform": "linux",
      "product": "bind",
      "release": "sles 15.7",
      "fixedVersion": "9.20.9-150700.3.3.1",
      "fix": "SUSE-SU-2025:01787-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-01787-1",
      "released": "2025-05-30T17:15:20Z"
    },
    {
      "platform": "linux",
      "product": "bind9",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:9.20.9-1",
      "fix": "DEBIAN-CVE-2025-40775",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40775",
      "released": "2025-05-21T13:16:02Z"
    },
    {
      "platform": "linux",
      "product": "bind9",
      "release": "Debian 14",
      "fixedVersion": "1:9.20.9-1",
      "fix": "DEBIAN-CVE-2025-40775",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40775",
      "released": "2025-05-21T13:16:02Z"
    },
    {
      "platform": "linux",
      "product": "bind9",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-dnsutils",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9-dnsutils 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9-dnsutils-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-dnsutils",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9-dnsutils 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9-dnsutils-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-host",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9-host 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9-host-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-host",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9-host 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9-host-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-libs",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9-libs 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9-libs-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-libs",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9-libs 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9-libs-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-utils",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9-utils 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9-utils-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-utils",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9-utils 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9-utils-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9utils",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "bind9utils 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-bind9utils-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9utils",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "bind9utils 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-bind9utils-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dnsutils",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1:9.20.0-2ubuntu3.2",
      "fix": "dnsutils 1:9.20.0-2ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-dnsutils-1-9.20.0-2ubuntu3.2",
      "released": "2025-05-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dnsutils",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1:9.20.4-3ubuntu1.1",
      "fix": "dnsutils 1:9.20.4-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-dnsutils-1-9.20.4-3ubuntu1.1",
      "released": "2025-05-21T00:00:00Z"
    }
  ],
  "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"
  }
}