{
  "cveId": "CVE-2026-89147",
  "url": "https://patchblox.com/security/cve/CVE-2026-89147",
  "summary": "CVE-2026-89147 is fixed in 11 products on 1 platform, first by libnetsnmptrapd40 5.9.1\u002Bdfsg-1ubuntu2.10, released September 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "net-snmp: Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs a...",
  "description": "Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs an unauthenticated blocking read without timeout on newly accepted connections. An unauthenticated remote client can connect to the SMUX listener and send no data, causing the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing.",
  "published": "2026-09-11T04:16:00Z",
  "severity": "Medium",
  "epss": 0.00486,
  "epssPercentile": 0.42134,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libnetsnmptrapd40",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "libnetsnmptrapd40 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libnetsnmptrapd40-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetsnmptrapd40t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "libnetsnmptrapd40t64 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libnetsnmptrapd40t64-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetsnmptrapd40t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "libnetsnmptrapd40t64 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libnetsnmptrapd40t64-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-base",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "libsnmp-base 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libsnmp-base-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-base",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "libsnmp-base 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libsnmp-base-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-base",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "libsnmp-base 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libsnmp-base-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-perl",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "libsnmp-perl 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libsnmp-perl-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-perl",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "libsnmp-perl 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libsnmp-perl-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp-perl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "libsnmp-perl 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libsnmp-perl-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp40",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "libsnmp40 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libsnmp40-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp40t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "libsnmp40t64 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libsnmp40t64-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libsnmp40t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "libsnmp40t64 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libsnmp40t64-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "net-snmp",
      "release": "Debian 14",
      "fixedVersion": "5.9.5.2\u002Bdfsg-3",
      "fix": "DEBIAN-CVE-2026-89147",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89147",
      "released": "2026-09-18T18:19:38Z"
    },
    {
      "platform": "linux",
      "product": "snmp",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "snmp 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-snmp-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmp",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "snmp 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-snmp-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmp",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "snmp 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-snmp-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmpd",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "snmpd 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-snmpd-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmpd",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "snmpd 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-snmpd-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmpd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "snmpd 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-snmpd-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmptrapd",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "snmptrapd 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-snmptrapd-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmptrapd",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "snmptrapd 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-snmptrapd-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "snmptrapd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "snmptrapd 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-snmptrapd-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "tkmib",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.9.1\u002Bdfsg-1ubuntu2.10",
      "fix": "tkmib 5.9.1\u002Bdfsg-1ubuntu2.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-tkmib-5.9.1-dfsg-1ubuntu2.10",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "tkmib",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "fix": "tkmib 5.9.4\u002Bdfsg-1.1ubuntu3.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-tkmib-5.9.4-dfsg-1.1ubuntu3.3",
      "released": "2026-09-11T04:16:00Z"
    },
    {
      "platform": "linux",
      "product": "tkmib",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.9.4\u002Bdfsg-2ubuntu3.1",
      "fix": "tkmib 5.9.4\u002Bdfsg-2ubuntu3.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-tkmib-5.9.4-dfsg-2ubuntu3.1",
      "released": "2026-09-11T04:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}