EPSS score history for CVE-2021-28556, 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 | 23.86% | 1.40% | -22.47% |
| 2 | 2025-11-21 | 26.04% | 23.86% | -2.18% |
| 3 | 2025-11-18 | 23.86% | 26.04% | +2.18% |
| 4 | 2025-11-01 | 29.38% | 23.86% | -5.52% |
| 5 | 2025-07-09 | 39.70% | 29.38% | -10.31% |
| 6 | 2025-03-30 | 42.28% | 39.70% | -2.59% |
| 7 | 2025-03-29 | 39.70% | 42.28% | +2.59% |
| 8 | 2025-03-17 | 0.19% | 39.70% | +39.51% |
| 9 | 2023-06-25 | 0.27% | 0.19% | -0.08% |
| 10 | 2023-03-07 | 1.09% | 0.27% | -0.82% |
| 11 | 2022-04-01 | 6.65% | 1.09% | -5.57% |
| 12 | 2022-02-04 | 3.20% | 6.65% | +3.45% |
| 13 | 2022-01-06 | 0.73% | 3.20% | +2.47% |
| 14 | 2021-06-29 | — | 0.73% | — |