EPSS score history for CVE-2021-20639, 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 | 0.34% | 0.45% | +0.11% |
| 2 | 2025-11-21 | 0.38% | 0.34% | -0.04% |
| 3 | 2025-11-18 | 0.34% | 0.38% | +0.04% |
| 4 | 2025-03-30 | 0.96% | 0.34% | -0.62% |
| 5 | 2025-03-29 | 0.30% | 0.96% | +0.66% |
| 6 | 2025-03-19 | 0.11% | 0.30% | +0.18% |
| 7 | 2025-03-17 | 0.04% | 0.11% | +0.07% |
| 8 | 2023-03-07 | 0.89% | 0.04% | -0.84% |
| 9 | 2022-04-01 | 1.40% | 0.89% | -0.52% |
| 10 | 2022-02-04 | 2.74% | 1.40% | -1.34% |
| 11 | 2022-01-06 | 0.62% | 2.74% | +2.12% |
| 12 | 2021-04-14 | — | 0.62% | — |