Windows Secure Kernel Mode Elevation of Privilege Vulnerability
Conclusion & alert: CVE-2025-21325 is rated Moderate Risk (57.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.90%). 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 | 2026-03-12 | 0.84% | 0.90% | +0.05% |
| 2 | 2026-02-25 | 1.08% | 0.84% | -0.23% |
| 3 | 2026-02-16 | — | 1.08% | — |
Full EPSS history (18 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_10_21h2 | < 10.0.19044.5371 | cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* |
| microsoft | windows_10_22h2 | < 10.0.19045.5371 | cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_22h2 | < 10.0.22621.4751 | cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_23h2 | < 10.0.22631.4751 | cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_24h2 | < 10.0.26100.2894 | cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2025 | < 10.0.26100.2894 | cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21325 | Vendor Advisory |