CVE-2026-97803: microsoft windows_11_26h1

CVSS 7.8 (high) · published 2026-10-13

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Affected products (NVD): microsoft windows_11_26h1

Fixed in (NVD): 10.0.28000.3231

Weakness: CWE-122

Source: NVD CVE-2026-97803

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97803

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