CVE-2019-1458
HighExploitedPublic exploitAn elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'.
Published Dec 10, 2019 · Updated Aug 12, 2026
Key Facts
Patch immediately- CVE-2019-1458 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 7 (Microsoft) and 7 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 10, 2019 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 74% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
74%
Higher than 99.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2019-1458 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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'.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jan 10, 2022 | Jul 10, 2022 | Known |
| Industry KEV feed | Dec 10, 2019 | Jul 10, 2022 | Known |
| CIRCL KEV | Jan 10, 2022 | Jul 10, 2022 | Known |
| ENISA EUVD | Jan 10, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
15 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 1507Microsoft | See advisory | n/a |
| Windows 10 1607Microsoft | See advisory | n/a |
| Windows 7Microsoft | See advisory | n/a |
| Windows 8.1Microsoft | See advisory | n/a |
| Windows Rt 8.1Microsoft | See advisory | n/a |
Timeline
Publicly disclosed
Dec 10, 2019
Added to Industry KEV feed
Dec 10, 2019
Added to CISA KEV
Jan 10, 2022
Added to CIRCL KEV
Jan 10, 2022
Added to ENISA EUVD
Jan 10, 2022
Last updated
Aug 12, 2026
References
- patchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
- exploithttp://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
- exploithttp://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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'.
Affected: Windows 10 1507 (Microsoft); Windows 10 1607 (Microsoft); Windows 7 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 10, 2019 and is known to be used in ransomware campaigns.
Yes. It was added on Jan 10, 2022 with a federal remediation due date of Jul 10, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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