CVE-2026-59133: Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2026-Aug

Released

2026-08-11

Last Updated

2026-08-27

EPSS Score

0.91% (percentile: 58.4%)

Description

Execution with unnecessary privileges in Microsoft High Performance Computing (HPC) Pack allows an authorized attacker to elevate privileges over a network.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (1)

Azure

• Microsoft HPC Pack 2019

Security Updates (1)

• Release Notes

Acknowledgments

P1hcn

Revision History

• 2026-08-11: Information published.
• 2026-08-27: Updated product information in the Software Update table. This is an informational change only.