What is CVE-2019-1458?

CVE-2019-1458 is a vulnerability in Microsoft Windows. Published 2019-12-10.

Is CVE-2019-1458 known to be exploited?

Yes. CVE-2019-1458 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-10), indicating it is being actively exploited. 82 public proof-of-concept repositories are indexed.

Vulnerability in Microsoft Windows

CVE-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'.

EPSS: 0.920 (99.7th percentile) — read the EPSS interpretation.

Affected products

Microsoft Windows — versions 10 for 32-bit Systems, 10 for x64-based Systems, 10 Version 1607 for 32-bit Systems
Microsoft Windows Server — versions 2016, 2016 (Core installation), 2008 for 32-bit Systems Service Pack 2

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-01-10. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-07-10.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458 (x_refsource_MISC)
packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privil… (x_refsource_MISC)
packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-L… (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-1458?: CVE-2019-1458 is a vulnerability in Microsoft Windows. Published 2019-12-10.
Is CVE-2019-1458 known to be exploited?: Yes. CVE-2019-1458 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-10), indicating it is being actively exploited. 82 public proof-of-concept repositories are indexed.