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EUVD-2026-4766

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 05:56

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T05:56:03.104952+00:00",
  "id": "EUVD-2026-4766"
}

CVE-2024-30380 (GCVE-0-2024-30380)

Vulnerability from cvelistv5 – Published: 2024-04-16 20:04 – Updated: 2024-08-02 01:32

Title

Junos OS and Junos OS Evolved: l2cpd crash upon receipt of a specific TLV

Summary

An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV. The l2cpd process is responsible for layer 2 control protocols, such as STP, RSTP, MSTP, VSTP, ERP, and LLDP. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP, leading to a Denial of Service. Continued receipt and processing of this specific TLV will create a sustained Denial of Service (DoS) condition. This issue affects: Junos OS: all versions before 20.4R3-S9, from 21.2 before 21.2R3-S7, from 21.3 before 21.3R3-S5, from 21.4 before 21.4R3-S4, from 22.1 before 22.1R3-S4, from 22.2 before 22.2R3-S2, from 22.3 before 22.3R2-S2, 22.3R3-S1, from 22.4 before 22.4R2-S2, 22.4R3, from 23.2 before 23.2R1-S1, 23.2R2; Junos OS Evolved: all versions before 21.2R3-S7, from 21.3 before 21.3R3-S5-EVO, from 21.4 before 21.4R3-S5-EVO, from 22.1 before 22.1R3-S4-EVO, from 22.2 before 22.2R3-S2-EVO, from 22.3 before 22.3R2-S2-EVO, 22.3R3-S1-EVO, from 22.4 before 22.4R2-S2-EVO, 22.4R3-EVO, from 23.2 before 23.2R1-S1-EVO, 23.2R2-EVO.

Severity

6.5 (Medium)


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

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-01 18:16 UTC

CWE

CWE-755 - Improper Handling of Exceptional Conditions
Denial of Service (DoS)

Assigner

juniper mitre root Scorecard

References

2 references

URL	Tags
https://supportportal.juniper.net/JSA79171	vendor-advisory
https://www.first.org/cvss/calculator/4.0#CVSS:4.…	technical-description

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 0 , < 20.4R3-S9 (semver) Affected: 21.2 , < 21.2R3-S7 (semver) Affected: 21.3 , < 21.3R3-S5 (semver) Affected: 21.4 , < 21.4R3-S4 (semver) Affected: 22.1 , < 22.1R3-S4 (semver) Affected: 22.2 , < 22.2R3-S2 (semver) Affected: 22.3 , < 22.3R2-S2, 22.3R3-S1 (semver) Affected: 22.4 , < 22.4R2-S2, 22.4R3 (semver) Affected: 23.2 , < 23.2R1-S1, 23.2R2 (semver)
Juniper Networks	Junos OS Evolved	Affected: 0 , < 21.2R3-S7-EVO (semver) Affected: 21.3 , < 21.3R3-S5-EVO (semver) Affected: 21.4 , < 21.4R3-S5-EVO (semver) Affected: 22.1 , < 22.1R3-S4-EVO (semver) Affected: 22.2 , < 22.2R3-S2-EVO (semver) Affected: 22.3 , < 22.3R2-S2-EVO, 22.3R3-S1-EVO (semver) Affected: 22.4 , < 22.4R2-S2-EVO, 22.4R3-EVO (semver) Affected: 23.2 , < 23.2R1-S1-EVO, 23.2R2-EVO (semver)

Date Public

2024-04-10 16:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-30380",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-01T18:16:07.416039Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-01T18:16:14.031Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T01:32:07.069Z",
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        "references": [
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              "x_transferred"
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            "url": "https://supportportal.juniper.net/JSA79171"
          },
          {
            "tags": [
              "technical-description",
              "x_transferred"
            ],
            "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
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              "status": "affected",
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              "lessThan": "21.2R3-S7",
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              "version": "22.4",
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              "versionType": "semver"
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              "lessThan": "22.3R2-S2-EVO, 22.3R3-S1-EVO",
              "status": "affected",
              "version": "22.3",
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            {
              "lessThan": "22.4R2-S2-EVO, 22.4R3-EVO",
              "status": "affected",
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              "lessThan": "23.2R1-S1-EVO, 23.2R2-EVO",
              "status": "affected",
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              "type": "text/html",
              "value": "A sample configuration enabling LLDP is shown below:\u003cbr\u003e\u003cbr\u003e\n\n\u003ctt\u003e\u003cspan style=\"background-color: rgb(40, 44, 52);\"\u003e[set protocols lldp interface all]\u003cbr\u003e\u003cbr\u003e\u003c/span\u003e\u003c/tt\u003e\u003ctt\u003e\u003cspan style=\"background-color: rgb(40, 44, 52);\"\u003e[set interfaces ge-0/0/0 lldp ...]\u003c/span\u003e\u003c/tt\u003e\u003cbr\u003e\n\n\u003cbr\u003e"
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          "value": "A sample configuration enabling LLDP is shown below:\n\n\n\n[set protocols lldp interface all]\n\n[set interfaces ge-0/0/0 lldp ...]"
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              "value": "An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV.\u003cbr\u003e\u003cbr\u003eThe l2cpd process is responsible for layer 2 control protocols, such as STP, RSTP, MSTP, VSTP, ERP, and LLDP.\u0026nbsp; The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP, leading to a Denial of Service.\u0026nbsp;\u0026nbsp;Continued receipt and processing of this specific TLV will create a sustained Denial of Service (DoS) condition.\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS: \u003cbr\u003eall versions before 20.4R3-S9, \u003cbr\u003efrom 21.2 before 21.2R3-S7, \u003cbr\u003efrom 21.3 before 21.3R3-S5, \u003cbr\u003efrom 21.4 before 21.4R3-S4, \u003cbr\u003efrom 22.1 before 22.1R3-S4, \u003cbr\u003efrom 22.2 before 22.2R3-S2, \u003cbr\u003efrom 22.3 before 22.3R2-S2, 22.3R3-S1, \u003cbr\u003efrom 22.4 before 22.4R2-S2, 22.4R3, \u003cbr\u003efrom 23.2 before 23.2R1-S1, 23.2R2;\u003c/p\u003e\u003cp\u003eJunos OS Evolved: \u003cbr\u003eall versions before 21.2R3-S7,\n\n \u003cbr\u003efrom 21.3 before 21.3R3-S5-EVO, \u003cbr\u003efrom 21.4 before 21.4R3-S5-EVO, \u003cbr\u003efrom 22.1 before 22.1R3-S4-EVO, \u003cbr\u003efrom 22.2 before 22.2R3-S2-EVO, \u003cbr\u003efrom 22.3 before 22.3R2-S2-EVO, 22.3R3-S1-EVO, \u003cbr\u003efrom 22.4 before 22.4R2-S2-EVO, 22.4R3-EVO, \u003cbr\u003efrom 23.2 before 23.2R1-S1-EVO, 23.2R2-EVO.\u003c/p\u003e"
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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.
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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.
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EUVD-2026-4766

CVE-2024-30380 (GCVE-0-2024-30380)

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Nomenclature

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