Vulnerability-Lookup

FKIE_CVE-2026-33802

Vulnerability from fkie_nvd - Published: 2026-07-09 22:17 - Updated: 2026-07-14 16:59

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS). On EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI 'request' command which will cause complete traffic impact until the system automatically recovers. This issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400: * 23.2R2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S1.

References

	URL	Tags
	sirt@juniper.net	https://supportportal.juniper.net/JSA110077	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	23.4
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	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	24.2
juniper	junos	24.2
juniper	junos	24.4
juniper	junos	24.4
juniper	junos	24.4
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	junos	25.2
juniper	junos	25.4
juniper	junos	25.4
juniper	ex2300	-
juniper	ex4000	-
juniper	ex4100	-
juniper	ex4300-mp	-
juniper	ex4400	-

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
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      "value": "A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS).\n\n\n\nOn EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI \u0027request\u0027 command which will cause complete traffic impact until the system automatically recovers.\n\nThis issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400:\n\n\n  *  23.2R2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S4,\n  *  24.4 versions before 24.4R2-S3,\n  *  25.2 versions before 25.2R2,\n  *  25.4 versions before 25.4R1-S1."
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  "id": "CVE-2026-33802",
  "lastModified": "2026-07-14T16:59:28.487",
  "metrics": {
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      "tags": [
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  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Analyzed",
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}

CVE-2026-33802 (GCVE-0-2026-33802)

Vulnerability from cvelistv5 – Published: 2026-07-09 21:03 – Updated: 2026-07-10 13:28

Title

Junos OS: EX Series: Unauthorized users can execute service-impacting CLI command

Summary

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

6.8 (Medium)


                        
                          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/AU:Y/R:A/RE:M

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-10 13:28 UTC

CWE

CWE-862 - Missing Authorization

Assigner

juniper mitre root Scorecard

References

1 reference

URL	Tags
https://supportportal.juniper.net/JSA110077	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 23.2R2 , < 23.2R2-S6 (custom) Affected: 23.4 , < 23.4R2-S8 (custom) Affected: 24.2 , < 24.2R2-S4 (custom) Affected: 24.4 , < 24.4R2-S3 (custom) Affected: 25.2 , < 25.2R2 (custom) Affected: 25.4 , < 25.4R1-S1 (custom)

Date Public

2026-07-08 16:00

Show details on NVD website

JSON

To clipboard

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            "other": {
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          "shortName": "CISA-ADP"
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    "cna": {
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          "defaultStatus": "unaffected",
          "platforms": [
            "EX4100",
            "EX4300-MP (Multigigabit)",
            "EX2300",
            "EX4400",
            "EX4000"
          ],
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "23.2R2-S6",
              "status": "affected",
              "version": "23.2R2",
              "versionType": "custom"
            },
            {
              "lessThan": "23.4R2-S8",
              "status": "affected",
              "version": "23.4",
              "versionType": "custom"
            },
            {
              "lessThan": "24.2R2-S4",
              "status": "affected",
              "version": "24.2",
              "versionType": "custom"
            },
            {
              "lessThan": "24.4R2-S3",
              "status": "affected",
              "version": "24.4",
              "versionType": "custom"
            },
            {
              "lessThan": "25.2R2",
              "status": "affected",
              "version": "25.2",
              "versionType": "custom"
            },
            {
              "lessThan": "25.4R1-S1",
              "status": "affected",
              "version": "25.4",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2026-07-08T16:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS).\u003cbr\u003e\u003cbr\u003e\n\nOn EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI \u0027request\u0027 command which will cause complete traffic impact until the system automatically recovers.\u003cbr\u003e\u003cp\u003e\u003cbr\u003eThis issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400:\u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003e23.2R2 versions before 23.2R2-S6,\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S8,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2-S4,\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R2-S3,\u003c/li\u003e\u003cli\u003e25.2 versions before 25.2R2,\u003c/li\u003e\u003cli\u003e25.4 versions before 25.4R1-S1.\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003e\u003cp\u003e\u003c/p\u003e"
            }
          ],
          "value": "A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS).\n\n\n\nOn EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI \u0027request\u0027 command which will cause complete traffic impact until the system automatically recovers.\n\nThis issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400:\n\n\n  *  23.2R2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S4,\n  *  24.4 versions before 24.4R2-S3,\n  *  25.2 versions before 25.2R2,\n  *  25.4 versions before 25.4R1-S1."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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          ],
          "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
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          ]
        },
        {
          "cvssV4_0": {
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            "Recovery": "AUTOMATIC",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "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/AU:Y/R:A/RE:M",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "MODERATE"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-09T21:03:48.353Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
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      "references": [
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          "tags": [
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          "url": "https://supportportal.juniper.net/JSA110077"
        }
      ],
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          "supportingMedia": [
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              "type": "text/html",
              "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.2R2-S6, 23.4R2-S8, 24.2R2-S4, 24.4R2-S3, 25.2R2, 25.4R1-S1, 25.4R2, 26.2R1, and all subsequent releases."
            }
          ],
          "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.2R2-S6, 23.4R2-S8, 24.2R2-S4, 24.4R2-S3, 25.2R2, 25.4R1-S1, 25.4R2, 26.2R1, and all subsequent releases."
        }
      ],
      "source": {
        "advisory": "JSA110077",
        "defect": [
          "1921391"
        ],
        "discovery": "USER"
      },
      "title": "Junos OS: EX Series: Unauthorized users can execute service-impacting CLI command",
      "workarounds": [
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          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "There are no known workarounds for this issue.\u003cbr\u003eTo reduce the risk of exploitation use command authorization to limit access to \u0027request\u0027 commands.\u003cbr\u003e"
            }
          ],
          "value": "There are no known workarounds for this issue.\nTo reduce the risk of exploitation use command authorization to limit access to \u0027request\u0027 commands."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2026-33802",
    "datePublished": "2026-07-09T21:03:48.353Z",
    "dateReserved": "2026-03-23T19:46:13.673Z",
    "dateUpdated": "2026-07-10T13:28:31.126Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2026-33802

CVE-2026-33802 (GCVE-0-2026-33802)

Tags

Sightings

Nomenclature

Related by attack behaviour