CVE-2026-103411

Full vulnerability record from the local CVENow database.

Description

An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply.

Severity

HIGH

CVSS score

7.1 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-10-28 17:17:28.397000

Last modified

2026-10-28 17:17:28.693000

View original CVE JSON

{
  "id": "CVE-2026-103411",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-28T17:17:28.397",
  "lastModified": "2026-10-28T17:17:28.693",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Juniper Networks",
          "product": "Session Smart Router",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "7.0.5",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "7.1.0",
              "lessThan": "7.1.7",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "7.2.0",
              "lessThan": "7.2.3",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-191"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://supportportal.juniper.net/JSA112183",
      "source": "[email protected]"
    }
  ]
}