CVE-2026-102087

Status: Awaiting AnalysisHigh (7.1)—

Severity7.1High · CVSS 4.0

Exploitation probability0.25 %higher than 15% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

This issue affects: Junos OS:

Technical details traces, logs and code from the original report

  *  All versions before 23.2R2-S6;
  *  23.4 versions before 23.4R2-S7;
  *  24.2 versions before 24.2R2-S4;
  *  24.4 versions before 24.4R2-S4;
  *  25.2 versions before 25.2R1-S2, 25.2R2;

Junos OS Evolved:
  *  All versions before 23.2R2-S6-EVO;
  *  23.4 versions before 23.4R2-S8.11-EVO;
  *  24.2 versions before 24.2R2-S4-EVO;
  *  24.4 versions before 24.4R2-S5-EVO;
  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;

CVSS

Base score: 7.1
Version: 4.0
Vector: 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/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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.25 %
Percentile among all scored CVEs: 15
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement90 %
Primary impactT1499 Endpoint Denial of Serviceimpact90 %

El vector AV:A/PR:N/UI:N indica red adyacente sin privilegios; la descripción dice que un update BGP válido hace caer rpd (DoS) con impacto en el tráfico.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Filter Network Traffic Disable or Remove Feature or Program

Affected technologies (2)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Juniper — Junos OS^AI Juniper — Junos OS Evolved^AI

CWEs

CWE-184

References

Show 1 references

https://supportportal.juniper.net/JSA112168

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-102087",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102087",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-10-14T20:16:18.843641Z"
        }
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    "cvssMetricV31": [
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        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 6.5,
          "attackVector": "ADJACENT_NETWORK",
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
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          "Recovery": "AUTOMATIC",
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          "Automatable": "YES",
          "attackVector": "ADJACENT",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
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          "exploitMaturity": "NOT_DEFINED",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
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          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
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          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "MODERATE",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
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  },
  "affected": [
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      "source": "sirt@juniper.net",
      "affectedData": [
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          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "versions": [
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              "version": "0",
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            {
              "status": "affected",
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            {
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            {
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              "version": "25.2",
              "lessThan": "25.2R1-S2, 25.2R2",
              "versionType": "custom"
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          ],
          "defaultStatus": "unaffected"
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        {
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          "product": "Junos OS Evolved",
          "versions": [
            {
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              "version": "0",
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              "versionType": "custom"
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              "status": "affected",
              "version": "23.4",
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              "versionType": "custom"
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              "status": "affected",
              "version": "24.2",
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              "status": "affected",
              "version": "24.4",
              "lessThan": "24.4R2-S5-EVO",
              "versionType": "custom"
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            {
              "status": "affected",
              "version": "25.2",
              "lessThan": "25.2R1-S2-EVO, 25.2R2-EVO",
              "versionType": "custom"
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  "published": "2026-10-14T17:18:04.800",
  "references": [
    {
      "url": "https://supportportal.juniper.net/JSA112168",
      "source": "sirt@juniper.net"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "sirt@juniper.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-184"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\n\nWhen in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 23.2R2-S6;\n  *  23.4 versions before 23.4R2-S7;\n  *  24.2 versions before 24.2R2-S4;\n  *  24.4 versions before 24.4R2-S4;\n  *  25.2 versions before 25.2R1-S2, 25.2R2;\n\n\n\nJunos OS Evolved:\n  *  All versions before 23.2R2-S6-EVO;\n  *  23.4 versions before 23.4R2-S8.11-EVO;\n  *  24.2 versions before 24.2R2-S4-EVO;\n  *  24.4 versions before 24.4R2-S5-EVO;\n  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;"
    }
  ],
  "lastModified": "2026-10-15T16:24:19.073",
  "sourceIdentifier": "sirt@juniper.net"
}