EUVD-2026-73687
GHSA-7cjp-p35m-7g22
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local exploitation by a low-privileged authenticated user; no interaction or scope change; full SYSTEM compromise if successful.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Biometric Service (WbioSrvc) allows a low-privileged authenticated local user to gain full SYSTEM-level control via a CWE-190 integer overflow that leads to memory corruption. The vulnerability spans a broad swath of Windows desktop and server releases - from Windows 10 1607 through Windows 11 26H1 and Windows Server 2016 through 2025 - making the exposure surface very wide. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an active, authenticated local logon session on the target Windows machine - either a physical console session or a remote desktop (RDP) session. … 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:H/I:H/A:H, score 7.8) accurately reflects local, low-complexity exploitation requiring only a low-privileged account - no user interaction or elevated rights needed beyond a basic logon session. … 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 Windows security update corresponding to your installed build as published in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69298. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running affected Windows versions (10/11, Server 2016-2025) and immediately flag domain controllers and servers hosting biometric authentication or physical-access systems for priority patching. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
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