Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability

Date Aug 11, 2026

Type Patch Tuesday

Signal Critical vendor advisory

Vendor / Product Microsoft · Microsoft High Performance Computing (HPC) Pack

CVE CVE-2026-59124

Critical vendor advisory CVE-2026-59124

Summary

Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network. Published in August 2026 Security Updates. MSRC exploitability: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-59124. Confirm whether Microsoft High Performance Computing (HPC) Pack is deployed, then apply the current security update or documented mitigation. CVSS score: 9.8.

Sources

MSRC 2026-Aug Security Update Guide NVD — CVE-2026-59124 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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