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CVE-2026-68820

Full vulnerability record from the local CVENow database.

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Severity
HIGH
CVSS score
7.0 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-08-11 17:19:06.357000
Last modified
2026-10-26 13:10:00.140000
View original CVE JSON
{
  "id": "CVE-2026-68820",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T17:19:06.357",
  "lastModified": "2026-10-26T13:10:00.140",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally."
    },
    {
      "lang": "es",
      "value": "Uso después de liberar en el controlador de función auxiliar de Windows para WinSock permite a un atacante autorizado elevar privilegios localmente."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
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          "vendor": "Microsoft",
          "product": "Windows 10 Version 1607",
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        },
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  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
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          "id": "CVE-2026-68820",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
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  },
  "cisaExploitAdd": "2026-08-11",
  "cisaActionDue": "2026-08-25",
  "cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
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      "description": [
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      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68820",
      "source": "[email protected]",
      "tags": [
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