CVE-2026-59124: Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability

Overview

Severity

Critical (CVSS 9.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2026-Aug

Released

2026-08-11

Description

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

FAQ

How could an attacker exploit this vulnerability? An attacker could exploit this vulnerability by submitting a specially crafted payload to an affected service that deserializes untrusted data. Successful exploitation could allow the attacker to execute code on the target system.

Affected Products (1)

Windows

• Windows App Client for Windows Desktop

Security Updates (1)

• Release Notes

Acknowledgments

P1hcn

Revision History

• 2026-08-11: Information published.