Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local privilege escalation requiring an existing low-priv account (AV:L, PR:L), reliable and interaction-free (AC:L, UI:N), yielding full SYSTEM compromise (C/I/A:H, scope unchanged).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Graphics Kernel component allows an authenticated attacker to elevate to SYSTEM by triggering a use-after-free (CWE-416) memory-corruption condition. All currently supported Windows client and server builds are affected - from Windows 10 1809 through Windows 11 26H1 and Windows Server 2019 through 2025. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already have local code-execution as a low-privileged authenticated user (CVSS PR:L) on an affected Windows build - this is a privilege-escalation bug, not a remote-entry point, so it cannot be triggered over the network or without an existing foothold. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 7.8) describes a locally-exploitable, low-complexity, low-privilege bug with total confidentiality/integrity/availability impact - the classic LPE profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has already gained a low-privileged foothold on a Windows host - for example through phishing, a compromised service account, or a malicious insider - runs a crafted program that drives the Graphics Kernel into a use-after-free, grooms the freed kernel object, and overwrites kernel structures to gain SYSTEM privileges. Given AV:L/AC:L, exploitation is local and low-complexity and requires no user interaction; no public proof-of-concept has been identified at time of analysis, but win32k/Graphics-Kernel UAF bugs are historically reliable to weaponize. |
| Remediation | Patch available per vendor advisory - apply the Microsoft security update for CVE-2026-50493 delivered through the standard monthly cumulative update for your specific Windows build, referencing the fixed build numbers listed at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50493. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Conduct inventory of Windows 10, 11, and Server 2019-2025 instances; identify and flag systems running as administrative workstations, domain controllers, or data-handling servers for priority patching. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 Version 1809
View allLocal privilege escalation in Microsoft Active Directory Federation Services (AD FS) lets an already-authenticated low-p
Local privilege escalation in the Microsoft Windows Kernel allows an unauthorized attacker to gain elevated (SYSTEM-leve
Local privilege escalation in the Windows Kernel lets an already-authenticated attacker corrupt kernel memory via a use-
Local privilege escalation in the Windows Win32K kernel subsystem (CWE-122 heap-based buffer overflow) lets an already-a
Local code execution in the Windows DHCP Client service stems from a use-after-free (CWE-416) memory-corruption flaw aff
Local code execution in the Microsoft Message Queuing (MSMQ) Queue Manager affects a broad range of Windows client and s
Remote code execution in the Microsoft Windows DHCP Server role allows an unauthenticated network attacker to run arbitr
Elevation of privilege in the Windows NTFS file-system driver lets an already-authenticated local user escalate to SYSTE
Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 throug
Elevation of privilege in the Windows Hyper-V virtual network switch (VMSwitch) lets an authenticated attacker operating
Remote code execution in the Windows Server Network driver stems from a race condition (CWE-362) that lets an unauthoriz
Remote code execution in Microsoft Windows Remote Desktop (RDP) allows an unauthorized network attacker to run arbitrary
Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-44094
GHSA-rx95-fw56-wrq7