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CVE-2026-70250

Status: Awaiting AnalysisHigh (8.8)—

Use after free in Windows DHCP Client allows an unauthorized attacker to execute code over an adjacent network.

CVSS

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

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.

El texto indica use-after-free en el cliente DHCP de Windows explotable por red adyacente sin privilegios ni interacción (AV:A/PR:N/UI:N), lo que permite ejecutar código.

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

Affected technologies (1)

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

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-70250",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-70250",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-13T20:49:32.567264Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2012",
          "versions": [
            {
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          "vendor": "Microsoft",
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2016",
          "versions": [
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          ],
          "platforms": [
            "x64-based Systems"
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2016 (Server Core installation)",
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          "platforms": [
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2019",
          "versions": [
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              "version": "10.0.17763.0",
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          ],
          "platforms": [
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        },
        {
          "vendor": "Microsoft",
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          "versions": [
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              "lessThan": "10.0.17763.9376",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2022",
          "versions": [
            {
              "status": "affected",
              "version": "10.0.20348.0",
              "lessThan": "10.0.20348.5761",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025",
          "versions": [
            {
              "status": "affected",
              "version": "10.0.26100.0",
              "lessThan": "10.0.26100.33650",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025 (Server Core installation)",
          "versions": [
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              "lessThan": "10.0.26100.33650",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
          ]
        }
      ]
    }
  ],
  "published": "2026-10-13T19:19:42.457",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70250",
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Windows DHCP Client allows an unauthorized attacker to execute code over an adjacent network."
    }
  ],
  "lastModified": "2026-10-13T21:18:12.450",
  "sourceIdentifier": "secure@microsoft.com"
}