EUVD-2026-73254
GHSA-jpr3-68mf-w3j2
Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Requires existing high-privilege local access to manipulate the search path; only confidential data exposed, with no integrity or availability impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Uncontrolled search path element in Windows Hello allows an authorized attacker to bypass a security feature locally.
AnalysisAI
Windows Hello on a broad range of Windows 10, Windows 11, and Windows Server releases contains an uncontrolled search path element (CWE-427) that allows a locally authenticated attacker with administrative privileges to substitute a malicious component in the search path, bypassing the Windows Hello security feature and exposing confidential information. The vulnerability is strictly local and requires high privileges (CVSS PR:H, AV:L), placing it at CVSS 4.4. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally present or remotely logged-in attacker who already holds high-privilege (administrator-level) access on the target Windows system, as confirmed by CVSS PR:H and AV:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.4 score accurately captures the constrained threat model: AV:L requires physical or remote-desktop-level local access, and PR:H mandates that the attacker already holds administrative privileges on the target system - a substantial barrier that eliminates opportunistic remote exploitation entirely. … 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 vendor-released cumulative updates via Windows Update, WSUS, or Microsoft Update Catalog targeting each platform's fixed build: Windows Server 2025/Windows 11 24H2 to 10.0.26100.33438 (server) or 10.0.26100.9445 (client), Windows 11 25H2 to 10.0.26200.9445, Windows 11 26H1 to 10.0.28000.2954, Windows 11 23H2 to 10.0.22631.7582, Windows 10 21H2/22H2 to 10.0.19044.7725/10.0.19045.7725, Windows Server 2022 to 10.0.20348.5622, Windows Server 2019/Windows 10 1809 to 10.0.17763.9245, and Windows Server 2016/Windows 10 1607 to 10.0.14393.9512. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-427 – Uncontrolled Search Path Element
View allSame technique Authentication Bypass
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External POC / Exploit Code
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