CVE intelligence and bounded remediation

CVE-2016-3349 — Microsoft Windows 10 security vulnerability

High CVSS 7.8

The kernel-mode drivers in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

Severity
High
CVSS
7.8 (3.0)
Published
2016-09-14
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-264

Affected products

  • microsoft / windows_10
  • microsoft / windows_10 / 1511
  • microsoft / windows_8.1
  • microsoft / windows_rt_8.1
  • microsoft / windows_server_2012
  • microsoft / windows_server_2012 / r2

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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