CVE-2026-97803: Windows Kernel Elevation of Privilege Vulnerability
Published Oct 13, 2026
·Updated
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Other sources
Windows Kernel Elevation of Privilege Vulnerability
— Microsoft
Affected Software
3 affected componentsFixes available
Microsoft Windows Kernel
Microsoft Windows 11=26H1
10.0.28000.3231
Microsoft Windows 11=26H1
10.0.28000.3231
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646
Event History
Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:01 PM
Data Sourced
via MITRE·07:01 PM
DescriptionSeverity
Frequently Asked Questions
1
Does exploitation require a victim to take any action?
No. The CVSS vector indicates no user interaction is required.
2
What level of access does an attacker need before exploitation?
The attacker needs local access and low-level privileges on the affected system. The vulnerability is not described as remotely exploitable.
3
Which systems should be included in triage?
The affected software list includes Microsoft Windows 11 and Microsoft Windows Kernel.