Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability
Conclusion & alert: CVE-2025-21198 is rated Moderate Risk (48.7/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.15%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-25 | 0.13% | 0.15% | +0.03% |
| 2 | 2026-03-22 | 0.38% | 0.13% | -0.25% |
| 3 | 2026-02-11 | — | 0.38% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.0 | 3.1 | CRITICAL |
|
2.3 | 6.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | hpc_pack_2016 | < 2016.3 | cpe:2.3:a:microsoft:hpc_pack_2016:*:*:*:*:*:*:*:* |
| microsoft | hpc_pack_2019 | < 6.3.8328.0 | cpe:2.3:a:microsoft:hpc_pack_2019:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21198 | Patch Vendor Advisory |