EPSS score history for CVE-2021-28638, 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 | 42.20% | 4.94% | -37.26% |
| 2 | 2025-11-21 | 48.76% | 42.20% | -6.56% |
| 3 | 2025-11-18 | 42.20% | 48.76% | +6.56% |
| 4 | 2025-03-30 | 25.77% | 42.20% | +16.43% |
| 5 | 2025-03-29 | 42.20% | 25.77% | -16.43% |
| 6 | 2025-03-25 | 31.01% | 42.20% | +11.19% |
| 7 | 2025-03-19 | 29.72% | 31.01% | +1.29% |
| 8 | 2025-03-17 | 1.29% | 29.72% | +28.43% |
| 9 | 2024-12-23 | 0.91% | 1.29% | +0.38% |
| 10 | 2024-12-17 | 0.17% | 0.91% | +0.74% |
| 11 | 2024-03-28 | 0.11% | 0.17% | +0.06% |
| 12 | 2023-03-07 | 1.22% | 0.11% | -1.11% |
| 13 | 2022-04-01 | 7.95% | 1.22% | -6.72% |
| 14 | 2022-02-04 | 18.30% | 7.95% | -10.35% |
| 15 | 2022-01-06 | 4.75% | 18.30% | +13.54% |
| 16 | 2021-09-01 | 0.73% | 4.75% | +4.02% |
| 17 | 2021-08-21 | — | 0.73% | — |