Type Vulnerability
Confirm whether the affected software runs in your estate before deciding on action.
Kernel · Memory corruption
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally
CVE-2026-109473
What this means
This is rated high severity (7.8 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Scoring and exploitation
7.8/ 10
CVSS 3.1 base scoreHigh
Exploitable only with local access and a low-privilege account, under specific conditions, and no one has to click or open anything. High impact on confidentiality, integrity and availability, and it can reach beyond the vulnerable system.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorLocalAV:L
Attack complexityHighAC:H
Privileges requiredLowPR:L
User interactionNoneUI:N
ScopeChangedS:C
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-416
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link