CVE-2026-59124

CRITICAL9.8Published on August 11, 2026

Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.

CVSS score9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)CWE-502

Microsoft Fixes 421 Vulnerabilities, Including an Exploited Zero-Day in `afd.sys`

On August 11, 2026, Microsoft released security updates addressing 421 vulnerabilities. One of them is CVE-2026-68820 , a high-severity flaw actively

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