CVE-2026-102054

Status: Awaiting AnalysisMedium (5.3)—

Severity5.3Medium · CVSS 4.0

Exploitation probability0.22 %higher than 12% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

An Improper Handling of Length Parameter Inconsistency vulnerability in L2ALM of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to obtain stale PFE packet memory via VXLAN overlay-ping traffic sent to a local VTEP.

CVSS

Base score: 5.3
Version: 4.0
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/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:C/RE:M/U:X

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.22 %
Percentile among all scored CVEs: 12
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 impactT1005 Data from Local Systemcollection60 %

Vector AV:A con PR:N y UI:N indica red adyacente sin privilegios (T1210). El texto dice que obtiene memoria de paquetes PFE obsoleta, es decir, lectura de datos residuales (T1005).

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 Disable or Remove Feature or Program Application Isolation and Sandboxing

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-130

References

Show 1 references

https://supportportal.juniper.net/JSA112187

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-102054",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-10-14T19:03:12.325112Z"
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
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          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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    "cvssMetricV40": [
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          "attackVector": "ADJACENT",
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          "valueDensity": "CONCENTRATED",
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          "exploitMaturity": "NOT_DEFINED",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
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          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "MODERATE",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
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              "versionType": "custom"
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              "version": "25.4X300",
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              "versionType": "custom"
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  "published": "2026-10-14T17:18:00.433",
  "references": [
    {
      "url": "https://supportportal.juniper.net/JSA112187",
      "source": "sirt@juniper.net"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "source": "sirt@juniper.net",
      "description": [
        {
          "lang": "en",
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        }
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    {
      "lang": "en",
      "value": "An Improper Handling of Length Parameter Inconsistency vulnerability in L2ALM of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to obtain stale PFE packet memory via VXLAN overlay-ping traffic sent to a local VTEP."
    }
  ],
  "lastModified": "2026-10-15T16:23:06.250",
  "sourceIdentifier": "sirt@juniper.net"
}