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Vulnerabilities

Vulnerability · CVE-2019-1458

Microsoft Win32k Privilege Escalation Vulnerability

Published Dec 10, 2019 · catalog updated Aug 11, 2026 · Microsoft Win32k

Patch now

CVE-2019-1458 is in the CISA known-exploited catalog, due Jul 10, 2022. Confirm Microsoft Win32k against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
74.44%
Remediation
Remediation guidance
Affected products
cpe microsoft/windows 10 1507 · cpe microsoft/windows 10 1607 · cpe microsoft/windows 7 · cpe microsoft/windows 8.1 · cpe microsoft/windows rt 8.1 · cpe microsoft/windows server 2008

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'.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 7version unspecified
  • cpe microsoft/windows 8.1version unspecified
  • cpe microsoft/windows rt 8.1version unspecified
  • cpe microsoft/windows server 2008version unspecified
  • vendor Microsoft Win32kversion unspecified

How to fix CVE-2019-1458

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-1458 is in the CISA known-exploited catalog, due Jul 10, 2022. Confirm Microsoft Win32k against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

No weakness class is stored. EPSS 74.44%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 10, 2019 · Catalog

    Detected

    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'.

  2. Jan 10, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jul 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 11, 2026 · Catalog

    Updated

    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'.

Sources

  • CISA KEVConfirmed exploitationCVE-2019-1458

    A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-1458

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-1458

    30-day exploitation probability 74.4%

    first.org
  • Exploit DatabasePublic exploit reference48180

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_windows/local/cve_2019_1458_wizardopium

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2019-1458

    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'.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2019-1458

    A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.