FKIE_CVE-2026-33787

Vulnerability from fkie_nvd - Published: 2026-04-09 22:16 - Updated: 2026-04-17 17:12
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
sirt@juniper.nethttps://kb.juniper.net/JSA107873Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.2
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 23.4
juniper junos 24.2
juniper junos 24.2
juniper junos 24.2
juniper junos 24.2
juniper junos 24.2
juniper junos 24.2
juniper junos 24.4
juniper junos 24.4
juniper junos 24.4
juniper junos 24.4
juniper junos 25.2
juniper junos 25.2
juniper junos 25.2
juniper srx1500 -
juniper srx4100 -
juniper srx4200 -
juniper srx4600 -
To clipboard 

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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "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 \u0027show chassis\u0027 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:\u00a0\n\n\n\n  *  23.2 versions before\u00a023.2R2-S6,\n  *  23.4 versions before\u00a023.4R2-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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  "id": "CVE-2026-33787",
  "lastModified": "2026-04-17T17:12:50.013",
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          "attackVector": "LOCAL",
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          "baseScore": 5.5,
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          "Safety": "NOT_DEFINED",
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          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
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          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X",
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          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "MODERATE"
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        "source": "sirt@juniper.net",
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  "published": "2026-04-09T22:16:28.387",
  "references": [
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      "source": "sirt@juniper.net",
      "tags": [
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        "Vendor Advisory"
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      "url": "https://kb.juniper.net/JSA107873"
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  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-754"
        }
      ],
      "source": "sirt@juniper.net",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.