Vulnerability-Lookup

CERTFR-2026-AVI-0416

Vulnerability from certfr_avis - Published: 2026-04-10 - Updated: 2026-04-10

Une vulnérabilité a été découverte dans les produits Juniper Networks. Elle permet à un attaquant de provoquer une élévation de privilèges.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 23.4 antérieures à 23.4R2-S6-EVO
Juniper Networks	Junos OS	Junos OS versions 24.2R2 antérieures à 24.2R2,
Juniper Networks	Junos OS	Junos OS versions 25.2 antérieures à 25.2R1
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 24.4R1 antérieures à 24.4R1-S1-EVO
Juniper Networks	Junos OS	Junos OS versions 23.4R2 antérieures à 23.4R2-S6
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 24.4R2 antérieures à 24.4R2-EVO
Juniper Networks	Junos OS	Junos OS versions 24.2R1 antérieures à 24.2R1-S2
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 25.2 antérieures à 25.2R1-EVO
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions antérieures à 22.4R3-S7-EVO
Juniper Networks	Junos OS	Junos OS versions 23.2R2 antérieures à 23.2R2-S4
Juniper Networks	Junos OS	Junos OS versions 24.4R1 antérieures à 24.4R1-S2 ou 24.4R2
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 23.2 antérieures à 23.2R2-S4-EVO
Juniper Networks	Junos OS	Junos OS versions antérieures à 22.4R3-S7
Juniper Networks	Junos OS Evolved	Junos OS Evolved versions 24.2 antérieures à 24.2R2-EVO

References

Title

Publication Time

Tags

Bulletin de sécurité Juniper Networks CVE-2026-33793

2026-04-09

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Junos OS Evolved versions 23.4 ant\u00e9rieures \u00e0 23.4R2-S6-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 24.2R2 ant\u00e9rieures \u00e0 24.2R2, ",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 25.2 ant\u00e9rieures \u00e0 25.2R1",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions 24.4R1 ant\u00e9rieures \u00e0 24.4R1-S1-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 23.4R2 ant\u00e9rieures \u00e0 23.4R2-S6",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions 24.4R2 ant\u00e9rieures \u00e0 24.4R2-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 24.2R1 ant\u00e9rieures \u00e0 24.2R1-S2 ",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions 25.2 ant\u00e9rieures \u00e0 25.2R1-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions ant\u00e9rieures \u00e0 22.4R3-S7-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 23.2R2 ant\u00e9rieures \u00e0 23.2R2-S4",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions 24.4R1 ant\u00e9rieures \u00e0 24.4R1-S2 ou 24.4R2",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions 23.2 ant\u00e9rieures \u00e0 23.2R2-S4-EVO ",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS versions ant\u00e9rieures \u00e0 22.4R3-S7",
      "product": {
        "name": "Junos OS",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    },
    {
      "description": "Junos OS Evolved versions 24.2 ant\u00e9rieures \u00e0 24.2R2-EVO",
      "product": {
        "name": "Junos OS Evolved",
        "vendor": {
          "name": "Juniper Networks",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-33793",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33793"
    }
  ],
  "initial_release_date": "2026-04-10T00:00:00",
  "last_revision_date": "2026-04-10T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0416",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-04-10T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans les produits Juniper Networks. Elle permet \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges.",
  "title": "Vuln\u00e9rabilit\u00e9 dans les produits Juniper Networks",
  "vendor_advisories": [
    {
      "published_at": "2026-04-09",
      "title": "Bulletin de s\u00e9curit\u00e9 Juniper Networks CVE-2026-33793",
      "url": "https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-an-unsigned-Python-op-script-configuration-is-present-a-local-low-privileged-user-can-compromise-the-system-CVE-2026-33793"
    }
  ]
}

CVE-2026-33793 (GCVE-0-2026-33793)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:24 – Updated: 2026-04-10 17:17

Title

Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system

Summary

An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system. When a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation. This issue affects Junos OS: * All versions before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S6, * from 24.2 before 24.2R1-S2, 24.2R2, * from 24.4 before 24.4R1-S2, 24.4R2; Junos OS Evolved: * All versions before 22.4R3-S7-EVO, * from 23.2 before 23.2R2-S4-EVO, * from 23.4 before 23.4R2-S6-EVO, * from 24.2 before 24.2R2-EVO, * from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.

Severity ?

7.8 (High)


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

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L

CWE

CWE-250 - Execution with Unnecessary Privileges

Assigner

juniper

References

URL

Tags

https://kb.juniper.net/JSA103142

vendor-advisory

Impacted products

Vendor

Product

Version

Juniper Networks

Junos OS

Affected: 0 , < 22.4R3-S7 (semver)
Affected: 23.2 , < 23.2R2-S4 (semver)
Affected: 23.4 , < 23.4R2-S6 (semver)
Affected: 24.2 , < 24.2R1-S2, 24.2R2 (semver)
Affected: 24.4 , < 24.4R1-S2, 24.4R2 (semver)

Juniper Networks

Junos OS Evolved

Affected: 0 , < 22.4R3-S7-EVO (semver)
Affected: 23.2 , < 23.2R2-S4-EVO (semver)
Affected: 23.4 , < 23.4R2-S6-EVO (semver)
Affected: 24.2 , < 24.2R2-EVO (semver)
Affected: 24.4 , < 24.4R1-S1-EVO, 24.4R2-EVO (semver)

Date Public ?

2026-04-08 16:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33793",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-10T17:16:42.635085Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-10T17:17:03.745Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
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              "lessThan": "22.4R3-S7",
              "status": "affected",
              "version": "0",
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              "lessThan": "23.2R2-S4",
              "status": "affected",
              "version": "23.2",
              "versionType": "semver"
            },
            {
              "lessThan": "23.4R2-S6",
              "status": "affected",
              "version": "23.4",
              "versionType": "semver"
            },
            {
              "lessThan": "24.2R1-S2, 24.2R2",
              "status": "affected",
              "version": "24.2",
              "versionType": "semver"
            },
            {
              "lessThan": "24.4R1-S2, 24.4R2",
              "status": "affected",
              "version": "24.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Junos OS Evolved",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "22.4R3-S7-EVO",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "23.2R2-S4-EVO",
              "status": "affected",
              "version": "23.2",
              "versionType": "semver"
            },
            {
              "lessThan": "23.4R2-S6-EVO",
              "status": "affected",
              "version": "23.4",
              "versionType": "semver"
            },
            {
              "lessThan": "24.2R2-EVO",
              "status": "affected",
              "version": "24.2",
              "versionType": "semver"
            },
            {
              "lessThan": "24.4R1-S1-EVO, 24.4R2-EVO",
              "status": "affected",
              "version": "24.4",
              "versionType": "semver"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "This issue only affects systems when remote Python3 op scripts are enabled.\u003cbr\u003e\u003ctt\u003e\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003e\u0026nbsp;[ system scripts language python3]\u003cbr\u003e\u003c/tt\u003e\u003cbr\u003eStarting in Junos OS Evolved Release 21.2R1, the \u003ctt\u003ejunos-defaults\u003c/tt\u003e configuration group includes the language python statement by default.\u003cbr\u003e\u003cbr\u003e"
            }
          ],
          "value": "This issue only affects systems when remote Python3 op scripts are enabled.\n\n\u00a0[ system scripts language python3]\n\nStarting in Junos OS Evolved Release 21.2R1, the junos-defaults configuration group includes the language python statement by default."
        }
      ],
      "datePublic": "2026-04-08T16:00:00.000Z",
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              "value": "An Execution with Unnecessary Privileges vulnerability\u0026nbsp;in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.\u003cbr\u003e\u003cbr\u003eWhen a\u0026nbsp;configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eThis issue affects Junos OS:\u0026nbsp;\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 22.4R3-S7,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S4,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before\u0026nbsp;23.4R2-S6,\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R1-S2, 24.2R2,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.4 before 24.4R1-S2, 24.4R2;\u0026nbsp;\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJunos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 22.4R3-S7-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S4-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before\u0026nbsp;23.4R2-S6-EVO,\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.\u003c/li\u003e\u003c/ul\u003e"
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      "exploits": [
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            "baseScore": 8.5,
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            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
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            "valueDensity": "NOT_DEFINED",
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          "tags": [
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          "url": "https://kb.juniper.net/JSA103142"
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        }
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      "source": {
        "advisory": "JSA103142",
        "defect": [
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        "discovery": "INTERNAL"
      },
      "title": "Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system",
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    "assignerShortName": "juniper",
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    "datePublished": "2026-04-09T21:24:50.485Z",
    "dateReserved": "2026-03-23T19:46:13.672Z",
    "dateUpdated": "2026-04-10T17:17:03.745Z",
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}

Sightings

Author	Source	Type	Date

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

CERTFR-2026-AVI-0416

Solutions

CVE-2026-33793 (GCVE-0-2026-33793)

Tags

Sightings

Nomenclature