CVE-2026-69963: Kernel Streaming Service Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.
Other sources
Kernel Streaming Service Driver Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running the listed Microsoft Windows client or server products are in scope. Exploitation is local, so the attacker must be able to execute code on the affected system.
What level of access does an attacker need?
The attacker must already be authorized on the affected machine and hold low privileges. No user interaction is required for exploitation.
What is the likely impact if exploitation succeeds?
A successful exploit can elevate an authorized local attacker’s privileges. The supplied severity vector indicates high impact to confidentiality, integrity, and availability.