EPSS score history for CVE-2021-20839, 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 | 0.42% | 1.10% | +0.68% |
| 2 | 2025-03-17 | 0.18% | 0.42% | +0.24% |
| 3 | 2023-03-07 | 1.05% | 0.18% | -0.88% |
| 4 | 2022-04-01 | 2.56% | 1.05% | -1.51% |
| 5 | 2022-02-04 | 4.24% | 2.56% | -1.68% |
| 6 | 2022-01-06 | 0.98% | 4.24% | +3.26% |
| 7 | 2021-11-01 | — | 0.98% | — |