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CVE-2026-33786

Estado: AnalizadaMedia (6.8)—

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300 and SRX4300 allows a local attacker with low privileges to cause a complete Denial of Service (DoS).

When a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again.

This issue affects Junos OS on SRX1600, SRX2300 and SRX4300:

This issue does not affect Junos OS versions before 24.4R1.

Detalles técnicos trazas, registros y código del informe original
  *  24.4 versions before 24.4R1-S3, 24.4R2.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Juniper — Junos

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-33786",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-04-13T17:39:17.275005Z"
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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    "cvssMetricV40": [
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          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "MODERATE",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "product": "Junos OS",
          "versions": [
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              "version": "24.4",
              "lessThan": "24.4R1-S3, 24.4R2",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "SRX1600",
            "SRX2300",
            "SRX4300"
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  ],
  "published": "2026-04-09T22:16:28.193",
  "references": [
    {
      "url": "https://kb.juniper.net/JSA107810",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "sirt@juniper.net"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "sirt@juniper.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300 and SRX4300 allows a local attacker with low privileges to cause a complete Denial of Service (DoS).\n\nWhen a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again.\n\nThis issue affects Junos OS on SRX1600, SRX2300 and SRX4300:\n\n\n\n  *  24.4 versions before 24.4R1-S3, 24.4R2.\n\n\nThis issue does not affect Junos OS versions before 24.4R1."
    }
  ],
  "lastModified": "2026-06-17T10:38:06.207",
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}