EUVD-2026-73221
GHSA-cvv3-8pp2-r8ph
Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Network vector confirmed by description and input CVSS; AC:H and UI:R reflect UAF heap-manipulation complexity and required victim interaction; PR:L from 'authorized attacker'; full C/I/A upon kernel code execution with unchanged scope.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via use-after-free (CWE-416) in the Windows Kernel enables a network-accessible, low-privileged authenticated user to elevate to SYSTEM privileges across a broad range of Windows client and server releases spanning Windows 10 through Windows 11 26H1 and Windows Server 2012 through 2025. Microsoft has confirmed and released fixed builds for all affected versions via the MSRC advisory. …
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 a low-privileged authenticated account (PR:L) - unauthenticated or anonymous remote exploitation is not supported per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.1 reflects full-impact potential (C:H/I:H/A:H) offset by meaningful exploitation barriers: high attack complexity (AC:H), a required low-privilege authenticated account (PR:L), and mandatory user interaction (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update corresponding to the installed Windows version: Windows 11 24H2/25H2 and Windows Server 2025 should be updated to build 10.0.26100.9445 and 10.0.26100.33438 respectively; Windows Server 2022 to 10.0.20348.5622 or later; Windows 10 and Windows Server 2016/2019 builds to 10.0.14393.9512 and 10.0.17763.9245 respectively; Windows 11 23H2 to 10.0.22631.7582; and Windows 11 26H1 to 10.0.28000.2954 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems across client and server environments, prioritizing domain-joined endpoints and critical infrastructure. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 1607
View allWindows MSHTML component contains a remote code execution vulnerability that allows attackers to craft malicious ActiveX
<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged fi
Windows MSDT (Microsoft Support Diagnostic Tool) allows remote code execution when called via the ms-msdt URL protocol f
The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows
The Windows VBScript engine contains a remote code execution vulnerability in object handling that allows full system co
Windows Print Spooler Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no auth
The Win32k kernel-mode driver in Windows Vista through Windows Server 2016 allows local privilege escalation, exploited
Windows Search Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely explo
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
Windows Kernel contains a TOCTOU race condition vulnerability allowing local privilege escalation, exploited by the OilR
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
Leaving vuln.today