Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.
Details
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.
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
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Critical 9.8
Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
Revision history
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#3
Updated an acknowledgement. This is an informational change only.
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#2
Corrected the listed software in the Security Updates table. Microsoft recommends installing the security update as soon as possible.
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#1
Information published.
References
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CVE-2026-59124 Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59124
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss