EUVD-2026-73548
GHSA-c4h7-g7f5-7c9h
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local UAF race condition requiring standard user account; no scope change; full system compromise on success consistent with SYSTEM-level code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation to SYSTEM in the Windows Search Component (WSearch) affects virtually every supported Windows client and server platform from Windows Server 2012 through Windows Server 2025 and Windows 10/11 across all major release branches. The vulnerability stems from a use-after-free (CWE-416) memory corruption flaw that an attacker with a standard user account can trigger to execute code at elevated privilege. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a valid local user account on the target system at minimum privilege level (PR:L per CVSS); anonymous or unauthenticated network exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.0 correctly captures the tension between high post-exploitation impact (C:H/I:H/A:H) and the significant exploitation barrier imposed by AC:H - this is not a point-and-click escalation, and successful exploitation likely requires careful race-condition timing that limits opportunistic mass exploitation. … 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 cumulative update from Microsoft addressing CVE-2026-69600, targeting the fixed build for each platform as listed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69600 - for example, Windows 11 24H2 to build 10.0.26100.9445 or later, Windows Server 2025 to build 10.0.26100.33438 or later, Windows Server 2019 to build 10.0.17763.9245 or later, and Windows Server 2022 to build 10.0.20348.5622 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: conduct a rapid inventory of Windows 10/11 and Windows Server 2012-2025 systems; identify systems hosting critical data or services that require priority patching; begin deployment to test environments to validate compatibility with line-of-business applications and confirm Windows Search service functionality post-patch. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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