CVE-2026-83639

7.8High

Published 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

7.8High

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-122

Impact

A local user can elevate privileges to SYSTEM. The attacker needs an existing low-privileged account on the target machine.

Root cause

A heap-based buffer overflow flaw exists within the Windows Sensor Data Service.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the Microsoft security update for Windows Sensor Data Service via Windows Update. If patching must wait, stop and disable the Sensor Data Service (SensrSvc) if not required for system operations.

shell

$ Stop-Service -Name SensrSvc -Force; Set-Service -Name SensrSvc -StartupType Disabled

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Heap-based buffer overflow in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83639

Source: nvd.nist.gov/vuln/detail/CVE-2026-83639