CVE-2019-1458
Microsoft Win32k Privilege Escalation
- Published10 Dec 2019
- Added to CISA KEV10 Jan 2022
- Remediation due10 Jul 2022
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'.
CVSS 3.1 breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected products
Remediation
No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.
References
- 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://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1458
Frequently asked
Is CVE-2019-1458 being actively exploited?
Yes. CVE-2019-1458 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 10 Jan 2022. It has been used in ransomware campaigns.
How severe is CVE-2019-1458?
CVE-2019-1458 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 74.3% probability of exploitation.
Which products are affected by CVE-2019-1458?
Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, and 3 more.
How do I fix CVE-2019-1458?
Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2019-1458 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.