How severe is CVE-2019-0797?

CVE-2019-0797 has a CVSS 3.1 base score of 7.8 (HIGH). EPSS estimates a 1.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2019-0797: Microsoft Win32k Privilege Escalation Vulnerability

CISA Known Exploited Vulnerabilities

Microsoft Win32k Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2021-11-03

Remediation due

2022-05-03

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-0797

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'. This CVE ID is unique from CVE-2019-0808.

Severity

CVSS 3.1 · CISA7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 13, 2026

All KEV statistics→

CISA added CVE-2019-0797 to the KEV catalog 939 days after its CVE record was published.
It is one of 390 Microsoft entries in the CISA KEV catalog, and one of 83 added in 2021.
Its current EPSS score (1.9%) is higher than that of 8% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft	Microsoft Windows Server	2012 2012 (Core installation) 2012 R2 2012 R2 (Core installation) 2016 2016 (Core installation) version 1709 (Core Installation) version 1803 (Core Installation) 2019 2019 (Core installation)
Microsoft	Microsoft Windows	8.1 for 32-bit systems 8.1 for x64-based systems RT 8.1 10 for 32-bit Systems 10 for x64-based Systems 10 Version 1607 for 32-bit Systems 10 Version 1607 for x64-based Systems 10 Version 1703 for 32-bit Systems 10 Version 1703 for x64-based Systems 10 Version 1709 for 32-bit Systems 10 Version 1709 for x64-based Systems 10 Version 1803 for 32-bit Systems 10 Version 1803 for x64-based Systems 10 Version 1803 for ARM64-based Systems 10 Version 1809 for 32-bit Systems 10 Version 1809 for x64-based Systems 10 Version 1809 for ARM64-based Systems 10 Version 1709 for ARM64-based Systems

References

1 Links

Other references

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0797

Record Details

Published

2019-04-09

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

More from Microsoft

All Microsoft CVEs→

CVE-2014-41137.8 HIGH

Microsoft Win32k Privilege Escalation Vulnerability

KEVEPSS 86.9%2014-10-15

CVE-2016-72557.8 HIGH

Microsoft Win32k Privilege Escalation Vulnerability

KEVEPSS 81.0%2016-11-10

CVE-2021-17327.8 HIGH

Windows Win32k Elevation of Privilege Vulnerability

MicrosoftKEVEPSS 78.4%2021-02-25

CVE-2019-14587.8 HIGH

Microsoft Win32k Privilege Escalation Vulnerability

MicrosoftKEVEPSS 74.4%2019-12-10

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.