EPSS score history for CVE-2021-20166, showing historical risk changes and exploitation probability trends for vulnerability prioritization and security analysis.
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 64.23% | 2.18% | -62.05% |
| 2 | 2025-08-27 | 56.86% | 64.23% | +7.37% |
| 3 | 2025-08-21 | 36.23% | 56.86% | +20.63% |
| 4 | 2025-08-20 | 42.20% | 36.23% | -5.97% |
| 5 | 2025-06-08 | 46.11% | 42.20% | -3.91% |
| 6 | 2025-05-20 | 54.41% | 46.11% | -8.31% |
| 7 | 2025-03-30 | 65.17% | 54.41% | -10.75% |
| 8 | 2025-03-29 | 54.41% | 65.17% | +10.75% |
| 9 | 2025-03-28 | 65.17% | 54.41% | -10.75% |
| 10 | 2025-03-27 | 60.49% | 65.17% | +4.67% |
| 11 | 2025-03-20 | 70.18% | 60.49% | -9.69% |
| 12 | 2025-03-19 | 60.49% | 70.18% | +9.69% |
| 13 | 2025-03-17 | 0.36% | 60.49% | +60.13% |
| 14 | 2024-08-05 | 0.50% | 0.36% | -0.14% |
| 15 | 2023-12-27 | 0.71% | 0.50% | -0.20% |
| 16 | 2023-07-23 | 0.96% | 0.71% | -0.25% |
| 17 | 2023-06-12 | 1.23% | 0.96% | -0.27% |
| 18 | 2023-03-07 | 0.89% | 1.23% | +0.34% |
| 19 | 2022-02-04 | 0.42% | 0.89% | +0.47% |
| 20 | 2021-12-31 | — | 0.42% | — |