EPSS score history for CVE-2021-28639, 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 | 48.21% | 66.05% | +17.84% |
| 2 | 2026-03-08 | 53.44% | 48.21% | -5.23% |
| 3 | 2026-01-13 | 17.40% | 53.44% | +36.04% |
| 4 | 2025-11-21 | 59.29% | 17.40% | -41.89% |
| 5 | 2025-11-18 | 17.40% | 59.29% | +41.89% |
| 6 | 2025-03-30 | 12.84% | 17.40% | +4.56% |
| 7 | 2025-03-29 | 17.40% | 12.84% | -4.56% |
| 8 | 2025-03-25 | 11.14% | 17.40% | +6.26% |
| 9 | 2025-03-19 | 17.02% | 11.14% | -5.88% |
| 10 | 2025-03-17 | 17.64% | 17.02% | -0.61% |
| 11 | 2025-01-23 | 13.44% | 17.64% | +4.20% |
| 12 | 2025-01-07 | 19.12% | 13.44% | -5.68% |
| 13 | 2024-12-23 | 23.00% | 19.12% | -3.88% |
| 14 | 2024-12-17 | 6.29% | 23.00% | +16.71% |
| 15 | 2024-11-21 | 8.30% | 6.29% | -2.01% |
| 16 | 2024-11-06 | 6.07% | 8.30% | +2.23% |
| 17 | 2024-09-22 | 6.69% | 6.07% | -0.62% |
| 18 | 2024-09-17 | 6.07% | 6.69% | +0.62% |
| 19 | 2024-08-15 | 6.69% | 6.07% | -0.62% |
| 20 | 2024-07-30 | 7.71% | 6.69% | -1.02% |
| 21 | 2024-07-16 | 6.79% | 7.71% | +0.92% |
| 22 | 2024-06-18 | 6.46% | 6.79% | +0.33% |
| 23 | 2024-04-23 | 8.12% | 6.46% | -1.66% |
| 24 | 2024-03-28 | 9.06% | 8.12% | -0.94% |
| 25 | 2024-02-17 | 6.88% | 9.06% | +2.17% |
| 26 | 2024-02-08 | 7.20% | 6.88% | -0.32% |
| 27 | 2024-01-20 | 9.45% | 7.20% | -2.24% |
| 28 | 2024-01-06 | 12.66% | 9.45% | -3.21% |
| 29 | 2023-12-22 | 26.60% | 12.66% | -13.94% |
| 30 | 2023-09-16 | 24.08% | 26.60% | +2.52% |
| 31 | 2023-08-17 | 30.24% | 24.08% | -6.16% |
| 32 | 2023-04-11 | 31.71% | 30.24% | -1.47% |
| 33 | 2023-03-13 | 33.12% | 31.71% | -1.41% |
| 34 | 2023-03-07 | 1.22% | 33.12% | +31.89% |
| 35 | 2022-04-01 | 7.95% | 1.22% | -6.72% |
| 36 | 2022-02-04 | 18.30% | 7.95% | -10.35% |
| 37 | 2022-01-06 | 4.75% | 18.30% | +13.54% |
| 38 | 2021-09-01 | 0.73% | 4.75% | +4.02% |
| 39 | 2021-08-21 | — | 0.73% | — |