EUVD-2026-56333
GHSA-qhfv-p785-h27m
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Local access with low privileges required to reach Hello storage; integrity impact is high (tampering), but no confidentiality or availability impact applies.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Cleartext storage of sensitive information in Windows Hello allows an authorized attacker to perform tampering locally.
AnalysisAI
Cleartext storage of sensitive credentials in Windows Hello exposes authentication material to local tampering by authorized but low-privileged attackers across a broad range of Windows 10, Windows 11, and Windows Server releases. The flaw, rooted in CWE-312, means that sensitive data used by the Windows Hello subsystem is persisted without adequate encryption, enabling an attacker with local access to modify it and undermine the integrity of the authentication mechanism. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session with at least standard user privileges (PR:L in CVSS). … 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:N/I:H/A:N accurately captures the local, low-complexity nature of this flaw: an attacker already holding a local user session can tamper with Windows Hello credential storage with no user interaction required and no elevated privileges. … 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 Microsoft's July 2026 cumulative updates, which are confirmed available per vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61928. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-312 – Cleartext Storage of Sensitive Information
View allSame technique Information Disclosure
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External POC / Exploit Code
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