{
  "cveId": "CVE-2026-18726",
  "url": "https://patchblox.com/security/cve/CVE-2026-18726",
  "summary": "CVE-2026-18726 is fixed in 9 products on 1 platform, first by DEBIAN-CVE-2026-18726, released August 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Open-iscsi: open-iscsi: denial of service in iscsiuio router advertisement parsing",
  "description": "A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service (DoS) in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement with a zero-length option, the attacker can trigger an infinite loop. This leads to sustained CPU usage, rendering the daemon unresponsive and impacting system availability. A secondary risk of out-of-bounds reads exists with a short IPv6 payload, though no memory corruption or data exposure has been confirmed.",
  "published": "2026-08-12T22:17:14Z",
  "severity": "Moderate",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
  "epss": 0.00312,
  "epssPercentile": 0.24314,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-18726",
  "fixes": [
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils-iscsiuio",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "iscsi-initiator-utils-iscsiuio-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "open-iscsi",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.1.8-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-18726",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-18726",
      "released": "2026-08-12T22:17:14Z"
    },
    {
      "platform": "linux",
      "product": "open-iscsi",
      "release": "Debian 14",
      "fixedVersion": "2.1.13-1",
      "fix": "DEBIAN-CVE-2026-18726",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-18726",
      "released": "2026-08-12T22:17:14Z"
    },
    {
      "platform": "linux",
      "product": "python3-iscsi-initiator-utils",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-iscsi-initiator-utils-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.2.1.4-10.git2a8f9d8.amzn2023.0.4",
      "fix": "ALAS2023-2026-2120",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2120",
      "released": "2026-08-31T09:00:00Z"
    }
  ],
  "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"
  }
}