November 13, 2026 Follow Egret
CVE-2019-0797 · CVE record: PUBLISHED

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Windows Server, Microsoft Windows

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0808.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2021-11-03. Ransomware campaign use: Unknown.

CISA required action: Apply updates per vendor instructions.

CISA due date: 2022-05-03. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Microsoft / Windows Server

Default status: Not specified

  • affected: 2012
  • affected: 2012 (Core installation)
  • affected: 2012 R2
  • affected: 2012 R2 (Core installation)
  • affected: 2016
  • affected: 2016 (Core installation)
  • affected: version 1709 (Core Installation)
  • affected: version 1803 (Core Installation)
  • affected: 2019
  • affected: 2019 (Core installation)

Microsoft / Windows

Default status: Not specified

  • affected: 8.1 for 32-bit systems
  • affected: 8.1 for x64-based systems
  • affected: RT 8.1
  • affected: 10 for 32-bit Systems
  • affected: 10 for x64-based Systems
  • affected: 10 Version 1607 for 32-bit Systems
  • affected: 10 Version 1607 for x64-based Systems
  • affected: 10 Version 1703 for 32-bit Systems
  • affected: 10 Version 1703 for x64-based Systems
  • affected: 10 Version 1709 for 32-bit Systems
  • affected: 10 Version 1709 for x64-based Systems
  • affected: 10 Version 1803 for 32-bit Systems
  • affected: 10 Version 1803 for x64-based Systems
  • affected: 10 Version 1803 for ARM64-based Systems
  • affected: 10 Version 1809 for 32-bit Systems
  • affected: 10 Version 1809 for x64-based Systems
  • affected: 10 Version 1809 for ARM64-based Systems
  • affected: 10 Version 1709 for ARM64-based Systems

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.01874,
  "percentile": 0.79691
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.01874,
  "percentile": 0.79564
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.01874,
  "percentile": 0.79543
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.01874,
  "percentile": 0.79532
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.01874,
  "percentile": 0.79516
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.01874,
  "percentile": 0.79482
}
06 Nov 2026, 12:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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05 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.01874,
  "percentile": 0.79467
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.01874,
  "percentile": 0.79452
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.01874,
  "percentile": 0.79414
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.01874,
  "percentile": 0.79389
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2019-0797",
  "cwes": [],
  "dateAdded": "2021-11-03",
  "dueDate": "2022-05-03",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://nvd.nist.gov/vuln/detail/CVE-2019-0797",
  "product": "Win32k",
  "requiredAction": "Apply updates per vendor instructions.",
  "shortDescription": "Microsoft Win32k contains a privilege escalation vulnerability when the Win32k component fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.",
  "vendorProject": "Microsoft",
  "vulnerabilityName": "Microsoft Win32k Privilege Escalation Vulnerability"
}
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