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CVE-2025-21198 is a remote code execution vulnerability affecting Microsoft High Performance Compute (HPC) Pack, including scenarios involving the head node and Linux compute nodes in HPC cluster environments. The issue can be triggered by sending a specially crafted HTTPS request to a targeted head node or Linux compute node on the cluster network. Microsoft assigned the vulnerability a CVSS base score of 9.0 and rated it Important. Available reporting identifies the flaw as enabling remote code execution within high-performance computing infrastructure, but does not provide sufficient technical detail to reliably identify the precise vulnerable function or root-cause class.
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No public exploit code observed for this vulnerability.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CVSS 9.0 remote code execution vulnerability affecting Microsoft HPC Pack Linux Compute Node that requires network access to cluster infrastructure and a malicious HTTPS request.
A high-severity remote code execution vulnerability in Microsoft HPC Pack mentioned in the broader list of February 2025 Microsoft vulnerabilities.
Remote code execution vulnerability affecting high-performance computing (HPC) environments; an attacker with access to the cluster network can send a crafted HTTPS request to a head node or Linux compute node to achieve RCE and potentially pivot to other connected clusters/nodes.
A remote code execution vulnerability in Microsoft High Performance Compute (HPC) Pack.
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.