Vulnerabilities
CVE-2026-69971: Windows Kernel-Mode Driver Information Disclosure Vulnerability
A flaw in Windows kernel‑mode drivers permits an authenticated local user to read protected data. Microsoft has issued a patch; defenders should update systems and monitor for suspicious activity.
A flaw in Windows kernel‑mode drivers allows an authenticated local user to read protected data that should be inaccessible.
What happened
The vulnerability, identified as CVE‑2026‑69971, stems from incorrect authorization checks in certain kernel‑mode drivers. An attacker with local privileges can trigger the flaw and obtain sensitive information.
Impact
- Local information disclosure of kernel data and potentially user secrets.
- No elevation of privilege; requires existing local access.
- Could aid further attacks if combined with other weaknesses.
Mitigation
- Apply the latest Windows security update that addresses CVE‑2026‑69971.
- Verify that all affected drivers are updated to the patched version.
- Restrict local user permissions where possible and enforce least‑privilege.
Monitoring
Watch for unusual kernel‑mode driver activity and audit logs for failed or suspicious driver calls.
Related vulnerabilities
CVE-2026-108462: Windows Kernel Information Disclosure Vulnerability
Microsoft has identified a Windows kernel information disclosure flaw (CVE‑2026‑108462) that permits local attackers with elevated privileges to read sensitive system data. The issue is fixed in the latest security update; administrators should apply the patch immediately and verify that kernel memory is protected.
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CVE-2026-70063: Local Windows Kernel Information Disclosure Vulnerability
Microsoft has identified CVE-2026-70063, an out‑of‑bounds read in the Windows kernel that permits a local, authorized attacker to read sensitive memory. The flaw is fixed in the latest cumulative update for Windows 10, Windows 11, and Windows Server 2022. Defenders should verify that the update is installed and monitor for any anomalous local privilege activity.
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CVE-2026-69963: Kernel Streaming Service Driver Local Privilege Escalation
A heap-based buffer overflow in the Windows Kernel Streaming Service driver (ks.sys) allows an authorized local attacker to elevate privileges to SYSTEM. Microsoft has released a patch in the latest cumulative update. Defenders should apply the update immediately and verify driver integrity.
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CVE‑2026‑69964: Use‑After‑Free in Windows Kernel Streaming Service Enables Local Privilege Escalation
A use‑after‑free flaw in the Windows Kernel Streaming Service driver allows a local attacker to gain SYSTEM privileges. The vulnerability is rated critical and affects all current Windows releases that include the Streaming Service component. Apply the latest cumulative update or the dedicated patch to eliminate the risk.
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