CVE-2020-21997 の EPSS スコア履歴で、リスクの推移と悪用確率の変化を示します。優先度付けとセキュリティ分析に利用できます。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.22% | 2.72% | +1.49% |
| 2 | 2025-11-21 | 1.36% | 1.22% | -0.13% |
| 3 | 2025-11-18 | 1.22% | 1.36% | +0.13% |
| 4 | 2025-10-06 | 0.35% | 1.22% | +0.88% |
| 5 | 2025-03-30 | 0.73% | 0.35% | -0.38% |
| 6 | 2025-03-29 | 0.35% | 0.73% | +0.38% |
| 7 | 2025-03-17 | 37.91% | 0.35% | -37.57% |
| 8 | 2025-02-16 | 40.60% | 37.91% | -2.69% |
| 9 | 2025-01-29 | 43.11% | 40.60% | -2.51% |
| 10 | 2025-01-14 | 42.24% | 43.11% | +0.87% |
| 11 | 2024-12-27 | 41.96% | 42.24% | +0.28% |
| 12 | 2024-12-17 | 42.74% | 41.96% | -0.78% |
| 13 | 2024-10-19 | 34.38% | 42.74% | +8.36% |
| 14 | 2024-10-02 | 30.99% | 34.38% | +3.40% |
| 15 | 2024-09-16 | 18.53% | 30.99% | +12.46% |
| 16 | 2024-08-15 | 14.22% | 18.53% | +4.31% |
| 17 | 2024-06-30 | 10.57% | 14.22% | +3.65% |
| 18 | 2024-06-01 | 9.51% | 10.57% | +1.06% |
| 19 | 2024-03-21 | 8.63% | 9.51% | +0.88% |
| 20 | 2024-02-23 | 4.54% | 8.63% | +4.09% |
| 21 | 2024-01-13 | 3.60% | 4.54% | +0.93% |
| 22 | 2023-07-07 | 3.26% | 3.60% | +0.35% |
| 23 | 2023-05-26 | 2.32% | 3.26% | +0.93% |
| 24 | 2023-03-07 | 8.38% | 2.32% | -6.06% |
| 25 | 2022-11-15 | 0.95% | 8.38% | +7.43% |
| 26 | 2022-07-15 | 8.38% | 0.95% | -7.43% |
| 27 | 2022-04-01 | 23.85% | 8.38% | -15.47% |
| 28 | 2022-02-04 | 2.74% | 23.85% | +21.11% |
| 29 | 2021-05-01 | 0.62% | 2.74% | +2.12% |
| 30 | 2021-04-30 | — | 0.62% | — |