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CVE-2026-33799 Junos OS and Junos OS Evolved: Receipt of a specific SNMPv3 request results in memory leak and eventual snmpd crash

🗓️ 09 Jul 2026 21:02:31Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

Out-of-bounds write in snmpd lets authenticated SNMPv3 queries leak memory and crash Junos OS and Junos OS Evolved.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.2R3-S8",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "21.4R3-S7",
        "status": "affected",
        "version": "21.4",
        "versionType": "custom"
      },
      {
        "lessThan": "22.1R3-S6",
        "status": "affected",
        "version": "22.1",
        "versionType": "custom"
      },
      {
        "lessThan": "22.2R3-S4",
        "status": "affected",
        "version": "22.2",
        "versionType": "custom"
      },
      {
        "lessThan": "22.3R3-S3",
        "status": "affected",
        "version": "22.3",
        "versionType": "custom"
      },
      {
        "lessThan": "22.4R3-S2",
        "status": "affected",
        "version": "22.4",
        "versionType": "custom"
      },
      {
        "lessThan": "23.2R2",
        "status": "affected",
        "version": "23.2",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.2R3-S8-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "21.4R3-S7-EVO",
        "status": "affected",
        "version": "21.4",
        "versionType": "custom"
      },
      {
        "lessThan": "22.1*",
        "status": "affected",
        "version": "22.1",
        "versionType": "custom"
      },
      {
        "lessThan": "22.2R3-S4-EVO",
        "status": "affected",
        "version": "22.2",
        "versionType": "custom"
      },
      {
        "lessThan": "22.3R3-S3-EVO",
        "status": "affected",
        "version": "22.3",
        "versionType": "custom"
      },
      {
        "lessThan": "22.4*",
        "status": "affected",
        "version": "22.4",
        "versionType": "custom"
      },
      {
        "lessThan": "23.2R2-EVO",
        "status": "affected",
        "version": "23.2",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      }
    ]
  }
]

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