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CVE-2026-33787

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 SRX1500, SRX4100, SRX4200 and SRX4600 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 SRX1500, SRX4100, SRX4200 and SRX4600:  * 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S7 * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2, * 25.2 versions before 25.2R1-S1, 25.2R2.

Severity
MEDIUM
CVSS score
6.8 (v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-09 22:16:28.387000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
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  "id": "CVE-2026-33787",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-09T22:16:28.387",
  "lastModified": "2026-10-26T22:10:00.163",
  "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 SRX1500, SRX4100, SRX4200 and SRX4600 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\n\n\nThis issue affects Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600: \n\n\n\n  *  23.2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S7\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R1-S1, 25.2R2."
    },
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      "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 SRX1500, SRX4100, SRX4200 y SRX4600 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 SRX1500, SRX4100, SRX4200 y SRX4600:\n\n  *  versiones 23.2 anteriores a 23.2R2-S6,\n  *  versiones 23.4 anteriores a 23.4R2-S7\n  *  versiones 24.2 anteriores a 24.2R2-S2,\n  *  versiones 24.4 anteriores a 24.4R2,\n  *  versiones 25.2 anteriores a 25.2R1-S1, 25.2R2."
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