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CVE-2026-33786

Full vulnerability record from the local CVENow database.

Description

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: * 24.4 versions before 24.4R1-S3, 24.4R2. This issue does not affect Junos OS versions before 24.4R1.

Severity
MEDIUM
CVSS score
6.8 (v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-09 22:16:28.193000
Last modified
2026-10-26 00:10:00.150000
View original CVE JSON
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  "id": "CVE-2026-33786",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-09T22:16:28.193",
  "lastModified": "2026-10-26T00:10:00.150",
  "vulnStatus": "Analyzed",
  "cveTags": [],
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      "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."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de comprobación incorrecta de condiciones inusuales o excepcionales en el demonio de control del chasis (chassisd) de Juniper Networks Junos OS en SRX1600, SRX2300 y SRX4300 permite a un atacante local con bajos privilegios causar una denegación de servicio (DoS) completa.\n\nCuando se ejecuta un comando CLI específico ’show chassis’, chassisd falla y se reinicia, lo que causa un impacto momentáneo en todo el tráfico hasta que todos los módulos vuelvan a estar en línea.\n\nEste problema afecta a Junos OS en SRX1600, SRX2300 y SRX4300:\n\n*   versiones 24.4 anteriores a 24.4R1-S3, 24.4R2.\n\nEste problema no afecta a las versiones de Junos OS anteriores a 24.4R1."
    }
  ],
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      "source": "[email protected]",
      "affectedData": [
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          "defaultStatus": "unaffected",
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            "SRX4300"
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      "url": "https://kb.juniper.net/JSA107810",
      "source": "[email protected]",
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}