EUVD-2026-73100
GHSA-wf7g-vfc7-2x4x
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local low-privileged access required to reach ICS service; AC:H reflects race condition for UAF; full C/I/A consistent with SYSTEM privilege escalation; scope unchanged.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Internet Connection Sharing (ICS) allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Internet Connection Sharing (ICS) via a use-after-free memory corruption flaw (CWE-416) enables a locally authenticated low-privileged attacker to gain full SYSTEM-level control of the host. The vulnerability spans a broad range of Windows client and server releases, from Windows 10 version 1607 through Windows 11 26H1 and Windows Server 2016 through 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated user account with at minimum standard (low) privileges on the target Windows system (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H is credible and internally consistent: the attack is local, requires low privileges, and demands a race condition (AC:H) to trigger the use-after-free reliably. … 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 for each affected Windows release to reach or exceed the patched build number: Windows 10 1607 and Server 2016 require build 10.0.14393.9512 or later; Windows 10 1809 and Server 2019 require 10.0.17763.9245 or later; Windows 10 21H2 requires 10.0.19044.7725 and 22H2 requires 10.0.19045.7725; Windows 11 23H2 requires 10.0.22631.7582, 24H2 and Server 2025 require 10.0.26100.9445 (client) or 10.0.26100.33438 (Server 2025), and 25H2 requires 10.0.26200.9445; Windows 11 26H1 requires 10.0.28000.2954; Windows Server 2022 requires 10.0.20348.5622. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify systems with Internet Connection Sharing enabled and catalog affected Windows versions (10, 11, Server 2016-2025) to assess internal risk. …
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
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