Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-01-10. Ransomware campaign use: Known.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-07-10. 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
Default status: Not specified
- 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: 7 for 32-bit Systems Service Pack 1
- affected: 7 for x64-based Systems Service Pack 1
- affected: 8.1 for 32-bit systems
- affected: 8.1 for x64-based systems
- affected: RT 8.1
Microsoft / Windows Server
Default status: Not specified
- affected: 2016
- affected: 2016 (Core installation)
- affected: 2008 for 32-bit Systems Service Pack 2
- affected: 2008 for 32-bit Systems Service Pack 2 (Core installation)
- affected: 2008 for Itanium-Based Systems Service Pack 2
- affected: 2008 for x64-based Systems Service Pack 2
- affected: 2008 for x64-based Systems Service Pack 2 (Core installation)
- affected: 2008 R2 for Itanium-Based Systems Service Pack 1
- affected: 2008 R2 for x64-based Systems Service Pack 1
- affected: 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
- affected: 2012
- affected: 2012 (Core installation)
- affected: 2012 R2
- affected: 2012 R2 (Core installation)
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
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
- http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1458
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": 0.74438,
"percentile": 0.995
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.74438,
"percentile": 0.99496
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.74438,
"percentile": 0.99496
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.74438,
"percentile": 0.99496
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.74438,
"percentile": 0.99496
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.74438,
"percentile": 0.99495
}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": 0.74438,
"percentile": 0.99494
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.74438,
"percentile": 0.99494
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.74438,
"percentile": 0.99494
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.74438,
"percentile": 0.99493
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2019-1458",
"cwes": [],
"dateAdded": "2022-01-10",
"dueDate": "2022-07-10",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Known",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2019-1458",
"product": "Win32k",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Win32k Privilege Escalation Vulnerability"
}