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CVE-2026-59124 is a remote code execution vulnerability in Microsoft High Performance Computing (HPC) Pack caused by deserialization of untrusted data in an exposed HPC Pack service. An unauthenticated attacker can submit a specially crafted serialized payload to the vulnerable network-reachable service, which may be deserialized without sufficient validation or restriction. Successful exploitation can result in arbitrary code execution on the target system. The vulnerability is associated with a CVSS score of 9.8 and has been assessed as more likely to be exploited. Although rated Important rather than Critical in some Microsoft severity metadata because HPC Pack is not installed by default, the flaw itself is a high-severity unauthenticated network RCE when the affected service is deployed.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A severe no-authentication, no-user-interaction vulnerability affecting Microsoft HPC Pack, rated Important because the product is not installed by default.
Critical remote code execution vulnerability in HPC Pack requiring no authentication or user interaction.
A remote code execution vulnerability affecting HPC Pack, rated CVSS 9.8, with exposure dependent on whether HPC Pack is installed.
A critical deserialization-based remote code execution vulnerability in HPC Pack. It is significant because the content says the CVE metadata incorrectly identifies the affected product, which may cause scanners to miss exposed HPC nodes.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.