CVE-2026-102024 (GCVE-0-2026-102024)

Vulnerability from cvelistv5 – Published: 2026-10-14 16:47 – Updated: 2026-10-16 16:42
VLAI
Title
Junos OS and Junos OS Evolved: An attacker causes a routing daemon crash when BGP extended-nexthop-tunnel is used
Summary
An Integer Overflow or Wraparound vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated BGP peer to cause a denial of service via BGP route updates when extended-nexthop-tunnel is enabled.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:42 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
juniper CNA under the mitre root
CNA scorecard B 85/100 over 175 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 0 , < 23.2R2-S7.7 (custom)
Affected: 23.4 , < 23.4R2-S8.13 (custom)
Affected: 24.2 , < 24.2R2-S5.5 (custom)
Affected: 24.4 , < 24.4R2-S5 (custom)
Affected: 25.2 , < 25.2R2-S2 (custom)
Affected: 25.4 , < 25.4R1-S3 (custom)
Affected: 26.2 , < 26.2R1-S2 (custom)
guessed Create a notification for this product.
Juniper Networks Junos OS Evolved Affected: 0 , < 23.2R2-S7.7-EVO (custom)
Affected: 23.4 , < 23.4R2-S8.11-EVO (custom)
Affected: 24.2 , < 24.2R2-S5.6-EVO (custom)
Affected: 24.4 , < 24.4R2-S5-EVO (custom)
Affected: 25.2 , < 25.2R2-S2-EVO (custom)
Affected: 25.4 , < 25.4R1-S3-EVO (custom)
Affected: 26.2 , < 26.2R1-S2-EVO (custom)
Affected: 23.4X100 (custom)
Affected: 25.2X100 , < 25.2X100-D35-EVO (custom)
Affected: 25.4X300 , < 25.4X300-D40-EVO (custom)
guessed Create a notification for this product.
Date Public
2026-10-14 16:00
Show details on NVD website
To clipboard 

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                  "version": "0",
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                  "status": "affected",
                  "version": "23.4",
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                },
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                  "status": "affected",
                  "version": "24.2",
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                  "version": "25.4",
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                  "status": "affected",
                  "version": "26.2",
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                {
                  "status": "affected",
                  "version": "23.4X100",
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                  "lessThan": "25.2X100-D35-EVO",
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                {
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                  "version": "25.4X300",
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                }
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            }
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              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "This issue only occurs when extended-nexthop-tunnel is configured:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[\u0026nbsp;protocols bgp group \u0026lt;name\u0026gt; family inet unicast extended-nexthop-tunnel ]\u003c/tt\u003e"
                }
              ],
              "value": "This issue only occurs when extended-nexthop-tunnel is configured:\n\n[\u00a0protocols bgp group \u003cname\u003e family inet unicast extended-nexthop-tunnel ]"
            }
          ],
          "datePublic": "2026-10-14T16:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "An Integer Overflow or Wraparound vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated BGP peer to cause a denial of service via BGP route updates when extended-nexthop-tunnel is enabled."
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              "value": "An Integer Overflow or Wraparound vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated BGP peer to cause a denial of service via BGP route updates when extended-nexthop-tunnel is enabled."
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          "exploits": [
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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": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            },
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              "cvssV4_0": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
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                "vulnerabilityResponseEffort": "MODERATE"
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            }
          ],
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                  "cweId": "CWE-190",
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              "lang": "en",
              "supportingMedia": [
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                  "value": "The following software releases have been updated to resolve this specific issue:\u003cbr\u003e\n\u003cbr\u003e\nJunos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 25.4R2, 26.2R1-S2, 26.2R2, 26.4R1, and all subsequent releases.\u003cbr\u003e\u003cbr\u003eJunos OS Evolved: 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.2X100-D35-EVO, 25.4R1-S3-EVO, 25.4R2-EVO, 25.4X300-D40-EVO, 26.2R1-S2-EVO, 26.2R2-EVO, 26.4R1-EVO, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNote:\u003c/b\u003e For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory."
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            }
          ],
          "source": {
            "advisory": "JSA112187",
            "defect": [
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            "discovery": "INTERNAL"
          },
          "title": "Junos OS and Junos OS Evolved: An attacker causes a routing daemon crash when BGP extended-nexthop-tunnel is used",
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        "assignerShortName": "juniper",
        "cveId": "CVE-2026-102024",
        "datePublished": "2026-10-14T16:47:24.285Z",
        "dateReserved": "2026-09-28T17:33:49.410Z",
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}



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