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CVE-2026-83781

Full vulnerability record from the local CVENow database.

Description

Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-10-13 19:20:27.050000
Last modified
2026-11-02 12:57:37
View original CVE JSON
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  "id": "CVE-2026-83781",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-13T19:20:27.050",
  "lastModified": "2026-11-02T12:57:37.000",
  "vulnStatus": "Analyzed",
  "cveTags": [],
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      "value": "Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally."
    }
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      "source": "[email protected]",
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  "metrics": {
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        "type": "Secondary",
        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
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    "ssvcV203": [
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          "role": "CISA Coordinator",
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  "weaknesses": [
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  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83781",
      "source": "[email protected]",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    }
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}