CVE-2026-66801

CVSS 9.8 (critical) · published 2026-11-10

Heap-based buffer overflow in Xbox allows an unauthorized attacker to execute code over a network.

Weakness: CWE-122

Source: NVD CVE-2026-66801

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66801

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