EUVD-2026-73142
GHSA-c4rj-jrq9-c7f6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local vector with low-privilege requirement matches WBS attack profile; full C/I/A impact consistent with SYSTEM-level escalation; no scope change as service compromise does not extend beyond the local OS.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Biometric Service (WBS) enables local privilege escalation across a wide swath of Microsoft Windows desktop and server releases. An authorized attacker holding only standard user privileges can trigger memory corruption in the biometric authentication subsystem, likely achieving SYSTEM-level code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have an authorized, low-privileged local session on the target Windows system - this includes interactive logon, Remote Desktop Protocol session, or execution as a standard user account (PR:L in CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures a low-complexity local attack requiring only authenticated standard-user access - conditions met by any interactive or remote-desktop session on an affected system, or by malware that has already achieved user-level foothold. … 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 addressing CVE-2026-69580 immediately via Windows Update, WSUS, or Microsoft Update Catalog; the patched build numbers are specified per-release in the affected products section above (e.g., Windows Server 2022 requires build 10.0.20348.5622 or later, Windows 11 24H2 requires 10.0.26100.9445 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Server 2016-2025 systems in your environment and confirm current patch levels using Windows Update or WSUS reporting. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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