Vulnerability-Lookup

FKIE_CVE-2021-0248

Vulnerability from fkie_nvd - Published: 2021-04-22 20:15 - Updated: 2026-06-17 03:29

Severity

10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Summary

This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in Juniper Networks Junos OS allows an attacker to take over any instance of an NFX deployment. This issue is only exploitable through administrative interfaces. This issue affects: Juniper Networks Junos OS versions prior to 19.1R1 on NFX Series. No other platforms besides NFX Series devices are affected.

References

	URL	Tags
	sirt@juniper.net	https://kb.juniper.net/JSA11141	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://kb.juniper.net/JSA11141	Vendor Advisory

Impacted products

Vendor	Product	Version
juniper	junos	*
juniper	junos	19.1
juniper	nfx150	-
juniper	nfx250	-
juniper	nfx350	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "platforms": [
            "NFX Series"
          ],
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "19.1R1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "sirt@juniper.net"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E46B49AE-2783-4962-9919-A0E1DDFCE4C9",
              "versionEndExcluding": "19.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*",
              "matchCriteriaId": "768C0EB7-8456-4BF4-8598-3401A54D21DA",
              "vulnerable": true
            }
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            }
          ],
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          "operator": "OR"
        }
      ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in Juniper Networks Junos OS allows an attacker to take over any instance of an NFX deployment. This issue is only exploitable through administrative interfaces. This issue affects: Juniper Networks Junos OS versions prior to 19.1R1 on NFX Series. No other platforms besides NFX Series devices are affected."
    },
    {
      "lang": "es",
      "value": "Este problema no es aplicable al Software NFX NextGen.\u0026#xa0;En los dispositivos de la Serie NFX, el uso de credenciales Embebidas en Juniper Networks Junos OS, permite a un atacante tomar el control de cualquier instancia de una implementaci\u00f3n de NFX.\u0026#xa0;Este problema solo es explotable por medio de interfaces administrativas.\u0026#xa0;Este problema afecta a: Juniper Networks Junos OS versiones anteriores a 19.1R1 en la serie NFX.\u0026#xa0;No est\u00e1n afectadas otras plataformas adem\u00e1s de los dispositivos de la serie NFX"
    }
  ],
  "id": "CVE-2021-0248",
  "lastModified": "2026-06-17T03:29:36.163",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0,
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
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  },
  "published": "2021-04-22T20:15:09.257",
  "references": [
    {
      "source": "sirt@juniper.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.juniper.net/JSA11141"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.juniper.net/JSA11141"
    }
  ],
  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ],
      "source": "sirt@juniper.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-0248 (GCVE-0-2021-0248)

Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-16 22:09

Title

NFX Series: Hard-coded credentials allow an attacker to take control of any instance through administrative interfaces.

Summary

Severity

10 (Critical)


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

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11141	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: unspecified , < 19.1R1 (custom)

Date Public

2021-04-14 00:00

Show details on NVD website

JSON

To clipboard

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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.

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.