EUVD-2026-29532
GHSA-c52r-mjqp-7w2r
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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
Local-only access with low-privilege authenticated user required; availability-only impact via DoS; no confidentiality or integrity loss; unchanged scope as crash is contained within the vulnerable system.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
Divide by zero for some Intel(R) QAT software drivers for Windows before version 1.13 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 (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
AnalysisAI
Divide-by-zero in Intel Quick Assist Technology (QAT) software drivers for Windows before version 1.13 allows a low-privileged authenticated local user to cause a denial of service. The flaw resides in the Ring 3 (user application) layer of the driver stack, meaning no kernel-level access or elevated privileges are required to trigger the crash. No active exploitation has been identified - EPSS is 0.01% at the 3rd percentile, the vulnerability is absent from the CISA KEV catalog, and SSVC rates exploitation as 'none' with automatable set to 'no.'
Technical ContextAI
The root cause is CWE-369 (Divide By Zero), a classic arithmetic defect where a divisor evaluates to zero at runtime, causing an unhandled exception or crash. The flaw is located in the Ring 3 user-space interface of Intel's QAT driver stack on Windows - Ring 3 is the CPU privilege level for user applications, distinct from the Ring 0 kernel driver layer. Intel Quick Assist Technology is a hardware-accelerated cryptography and compression offload engine deployed in enterprise servers, cloud infrastructure, and data center appliances using compatible Intel silicon. The affected CPE is cpe:2.3:a:n/a:intel(r)_qat_software_drivers_for_windows:*:*:*:*:*:*:*:*, covering all Windows driver releases prior to 1.13. Because the fault occurs in user space rather than the kernel driver, the immediate blast radius is limited to the calling process and QAT availability, rather than a full system kernel panic.
RemediationAI
Upgrade Intel QAT software drivers for Windows to version 1.13 or later, the confirmed fix version per Intel Security Advisory INTEL-SA-01387 (https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01387.html). If immediate patching is not feasible, restrict local logon access to QAT-equipped Windows systems to trusted administrators only, eliminating the low-privilege user attack surface - note this may be impractical in shared or multi-user environments. An alternative workaround is to disable or uninstall the Intel QAT driver entirely, but this removes hardware-accelerated cryptography and compression capabilities, causing performance degradation on workloads that rely on QAT offload (TLS termination, IPsec, data compression). Given the low severity and local-only vector, patching on the next scheduled maintenance window is appropriate for most environments; expedited patching should be prioritized only for multi-tenant or shared-access systems.
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Same weakness CWE-369 – Divide By Zero
View allSame technique Denial Of Service
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External POC / Exploit Code
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