CVE-2026-40427 · Infrastructure
NO FIX YET
Some Intel QuickAssist Technology driver versions for Windows contain a use-after-free bug reachable from user-mode (Ring 3) applications. A logged-in local user with low privileges can trigger it to cause a denial of service.
first public Nov 10, 2026 · 1 source
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Only Windows systems with the Intel QuickAssist Technology driver installed are exposed, and the attacker must already have a local account on the machine. The sources do not name the affected driver versions, so the team should check its installed driver against Intel's advisory. Systems without the driver can skip it.
Not affected if no-qat-driver, non-windows
Who cares intel-quickassist, windows
No fix yet, per the sources.
Use after free for some Intel(R) QuickAssist Technology Driver for Windows within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
This page as .md · .json · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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