{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "MX Series"
          ],
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "22.4R3-S1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "23.2R2",
              "status": "affected",
              "version": "23.2",
              "versionType": "semver"
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            {
              "lessThan": "23.4R2",
              "status": "affected",
              "version": "23.4",
              "versionType": "semver"
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          ]
        }
      ],
      "datePublic": "2026-04-08T16:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "value": "A Missing Release of Memory after Effective Lifetime vulnerability in the DHCP daemon (jdhcpd) of Juniper Networks Junos OS on MX Series, allows an adjacent, unauthenticated attacker to cause a memory leak, that will eventually cause a complete Denial-of-Service (DoS).\u003cbr\u003e\u003cbr\u003eIn a DHCPv6 over PPPoE, or\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eDHCPv6 over VLAN\u003c/span\u003e\u0026nbsp;with Active lease query or Bulk lease query scenario, every subscriber logout will leak a small amount of memory. When all available memory has been exhausted, jdhcpd will crash and restart which causes a complete service impact until the process has recovered.\u003cbr\u003e\u003cbr\u003eThe memory usage of jdhcpd can be monitored with:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003euser@host\u0026gt; show system processes extensive | match jdhcpd\u003c/tt\u003e\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThis issue affects Junos OS:\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-S1,\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2,\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "A Missing Release of Memory after Effective Lifetime vulnerability in the DHCP daemon (jdhcpd) of Juniper Networks Junos OS on MX Series, allows an adjacent, unauthenticated attacker to cause a memory leak, that will eventually cause a complete Denial-of-Service (DoS).\n\nIn a DHCPv6 over PPPoE, or\u00a0DHCPv6 over VLAN\u00a0with Active lease query or Bulk lease query scenario, every subscriber logout will leak a small amount of memory. When all available memory has been exhausted, jdhcpd will crash and restart which causes a complete service impact until the process has recovered.\n\nThe memory usage of jdhcpd can be monitored with:\n\nuser@host\u003e show system processes extensive | match jdhcpd\n\n\n\nThis issue affects Junos OS:\n\n  *  all versions before 22.4R3-S1,\n  *  23.2 versions before 23.2R2,\n  *  23.4 versions before 23.4R2."
        }
      ],
      "exploits": [
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              "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
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          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "MODERATE"
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              "value": "GENERAL"
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          ]
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-401",
              "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T21:29:45.496Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
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      "references": [
        {
          "tags": [
            "vendor-advisory"
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          "url": "https://kb.juniper.net/JSA107820"
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              "value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S1, 23.2R2, 23.4R2, 24.2R1, and all subsequent releases."
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          "value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S1, 23.2R2, 23.4R2, 24.2R1, and all subsequent releases."
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      "source": {
        "advisory": "JSA107820",
        "defect": [
          "1777055"
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        "discovery": "USER"
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      "title": "Junos OS: MX Series: In specific DHCPv6 scenarios jdhcpd memory increases continuously with subscriber logouts",
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    "assignerShortName": "juniper",
    "cveId": "CVE-2026-33782",
    "datePublished": "2026-04-09T21:29:45.496Z",
    "dateReserved": "2026-03-23T19:46:13.669Z",
    "dateUpdated": "2026-04-09T21:29:45.496Z",
    "state": "PUBLISHED"
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}