Windows 11 25H2
by Microsoft
Standard maintenance is sufficient
Windows 11 25H2 has low exploitation rates. Attackers rarely target this software's known vulnerabilities.
What to do
- Keep automatic updates enabled
- No urgent action needed
- Review periodically as part of normal maintenance
What Attackers Target
Vulnerabilities with high exploit probability
0.9%
Confirmed actively exploited (CISA)
3.6%
Public exploit code available
0.0%
Based on 334 known vulnerabilities. Percentages show the proportion that are actively dangerous — a low percentage means most vulnerabilities in this product are not being exploited.
Most Dangerous Vulnerabilities
| CVE | CVSS | Exploit Probability | Confirmed |
|---|---|---|---|
| CVE-2026-21513 | 8.8 | 28.0% | Yes |
| CVE-2026-21533 | 7.8 | 22.7% | Yes |
| CVE-2026-21525 | 6.2 | 11.8% | Yes |
| CVE-2026-21519 | 7.8 | 4.5% | Yes |
| CVE-2025-24990 | 7.8 | 3.9% | Yes |
| CVE-2026-20805 | 5.5 | 3.7% | Yes |
| CVE-2025-59230 | 7.8 | 3.7% | Yes |
| CVE-2026-21510 | 8.8 | 3.5% | Yes |
| CVE-2025-62221 | 7.8 | 3.2% | Yes |
| CVE-2025-62215 | 7.0 | 2.4% | Yes |
| CVE-2025-47827 | 4.6 | 1.4% | Yes |
| CVE-2026-20931 | 8.0 | 0.8% | — |
| CVE-2025-59254 | 7.8 | 0.6% | — |
| CVE-2026-21265 | 6.4 | 0.5% | — |
| CVE-2026-25166 | 7.8 | 0.5% | — |
| CVE-2025-59282 | 7.0 | 0.4% | — |
| CVE-2025-59295 | 8.8 | 0.4% | — |
| CVE-2025-54100 | 7.8 | 0.4% | — |
| CVE-2025-55338 | 6.1 | 0.3% | — |
| CVE-2025-64670 | 6.5 | 0.3% | — |
4
/ 100
low-risk
Active Threat
1/50 · Minimal
Exploit Availability
3/50 · Minimal
Score uses Wilson score intervals to account for sample size. Products with few CVEs are scored conservatively.