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GHSA-4C4G-46P8-24MQ

Vulnerability from github – Published: 2026-07-10 00:31 – Updated: 2026-07-10 00:31

Details

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.

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-33802"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-09T22:17:03Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-4c4g-46p8-24mq",
  "modified": "2026-07-10T00:31:25Z",
  "published": "2026-07-10T00:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33802"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA110077"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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:A/V:X/RE:M/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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

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.

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 (v2.0.3)

CWE

CWE-862 - Missing Authorization

Assigner

juniper

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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                "timestamp": "2026-07-10T13:28:21.072727Z",
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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.

Action not permitted

GHSA-4C4G-46P8-24MQ

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

Tags

Sightings

Nomenclature