EPSS score history for CVE-2021-39839, 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 | 45.46% | 64.30% | +18.84% |
| 2 | 2026-04-17 | 50.75% | 45.46% | -5.29% |
| 3 | 2026-02-02 | 56.99% | 50.75% | -6.24% |
| 4 | 2025-03-30 | 33.31% | 56.99% | +23.68% |
| 5 | 2025-03-29 | 56.99% | 33.31% | -23.68% |
| 6 | 2025-03-25 | 59.47% | 56.99% | -2.48% |
| 7 | 2025-03-19 | 63.94% | 59.47% | -4.47% |
| 8 | 2025-03-17 | 12.31% | 63.94% | +51.63% |
| 9 | 2025-03-04 | 9.21% | 12.31% | +3.10% |
| 10 | 2025-02-16 | 13.44% | 9.21% | -4.23% |
| 11 | 2025-02-01 | 9.87% | 13.44% | +3.56% |
| 12 | 2024-12-31 | 12.84% | 9.87% | -2.96% |
| 13 | 2024-12-17 | 13.96% | 12.84% | -1.13% |
| 14 | 2024-12-16 | 10.42% | 13.96% | +3.54% |
| 15 | 2024-11-01 | 11.42% | 10.42% | -1.00% |
| 16 | 2024-10-16 | 13.04% | 11.42% | -1.62% |
| 17 | 2024-10-02 | 11.59% | 13.04% | +1.45% |
| 18 | 2024-08-20 | 11.06% | 11.59% | +0.53% |
| 19 | 2024-07-23 | 11.20% | 11.06% | -0.15% |
| 20 | 2024-06-25 | 13.86% | 11.20% | -2.66% |
| 21 | 2024-05-30 | 13.39% | 13.86% | +0.47% |
| 22 | 2024-04-20 | 12.02% | 13.39% | +1.37% |
| 23 | 2024-03-25 | 13.34% | 12.02% | -1.31% |
| 24 | 2024-02-14 | 17.07% | 13.34% | -3.73% |
| 25 | 2024-02-08 | 22.14% | 17.07% | -5.07% |
| 26 | 2024-01-31 | 36.58% | 22.14% | -14.44% |
| 27 | 2023-11-08 | 10.82% | 36.58% | +25.76% |
| 28 | 2023-10-26 | 9.56% | 10.82% | +1.26% |
| 29 | 2023-09-26 | 12.74% | 9.56% | -3.18% |
| 30 | 2023-05-21 | 13.56% | 12.74% | -0.82% |
| 31 | 2023-04-22 | 18.00% | 13.56% | -4.44% |
| 32 | 2023-03-25 | 15.93% | 18.00% | +2.07% |
| 33 | 2023-03-12 | 21.22% | 15.93% | -5.29% |
| 34 | 2023-03-07 | 1.22% | 21.22% | +20.00% |
| 35 | 2022-04-01 | 7.95% | 1.22% | -6.72% |
| 36 | 2022-02-04 | 27.23% | 7.95% | -19.28% |
| 37 | 2022-01-06 | 7.70% | 27.23% | +19.53% |
| 38 | 2021-10-07 | 0.73% | 7.70% | +6.97% |
| 39 | 2021-09-30 | — | 0.73% | — |