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

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.

Details

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

Security updates
6.3.8359 — https://github.com/Azure/hpcpack/blob/master/CHANGELOG.md#hpc-pack-2019-update-3-qfe-kb5124659-638359---8102026

Vulnerabilities 1

High 8.8

CVE-2026-59133

Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability

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

Microsoft Microsoft HPC Pack 2019

Aug 11, 2026

Revision history

2026-08-27 #2
Updated product information in the Software Update table. This is an informational change only.
2026-08-11 #1
Information published.

References

CVE-2026-59133 Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59133
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss