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CVE-2026-88244

High (7.5)—
Schedule the patchSeverity High 7.5. No public exploit or active exploitation known.
Vendor advisory· Microsoft MSRC
Severity7.5High · CVSS 3.1
Exploitation probability0.41 %higher than 36% of CVEs · score from Nov 11, 2026
Active exploitationNonot in the CISA catalog · checked Nov 12, 03:00 AM
Public exploitNot knownno public code found

News and reports on Orbitaley

Use after free in Windows Link Layer Topology Discovery Protocol allows an unauthorized attacker to execute code over an adjacent network.

Timeline

Built from our own data: NVD, CISA KEV and other exploitation catalogues, FIRST EPSS, public exploits, specialised media and Orbitaley coverage.

  1. CVE record published in NVD
  2. Alert: Microsoft fixes 200 vulnerabilities, including an Outlook flaw CISA confirms is being exploited

ATT&CK techniques

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

Vector AV:A/PR:N/UI:N indica red adyacente sin privilegios ni interacción, luego T1210; la descripción señala ejecución de código sin intérprete concreto, luego T1059.

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

Privileged Account ManagementDisable or Remove Feature or ProgramVulnerability ScanningThreat Intelligence ProgramRestrict Web-Based ContentNetwork Segmentation

Affected technologies (1)

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

Microsoft — WindowsAI

NVD record

NVD status
Awaiting Analysis
Published
Nov 10, 2026
Last modified
Nov 10, 2026
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-416

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-88244",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-88244",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-11-10T21:18:45.782731Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
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          "product": "Windows 10 Version 1607",
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          ],
          "platforms": [
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows 10 Version 21H2",
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              "version": "10.0.19044.0",
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          "platforms": [
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        {
          "vendor": "Microsoft",
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          ],
          "platforms": [
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          "vendor": "Microsoft",
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2016",
          "versions": [
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          ],
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        },
        {
          "vendor": "Microsoft",
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          ],
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2019",
          "versions": [
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2019 (Server Core installation)",
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          ],
          "platforms": [
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2022",
          "versions": [
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              "lessThan": "10.0.20348.5870",
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          ],
          "platforms": [
            "x64-based Systems"
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025",
          "versions": [
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          ],
          "platforms": [
            "x64-based Systems"
          ]
        },
        {
          "vendor": "Microsoft",
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              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
          ]
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      ]
    }
  ],
  "published": "2026-11-10T19:21:33.937",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88244",
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Windows Link Layer Topology Discovery Protocol allows an unauthorized attacker to execute code over an adjacent network."
    }
  ],
  "lastModified": "2026-11-10T22:21:13.690",
  "sourceIdentifier": "secure@microsoft.com"
}