EPSS score history for CVE-2021-33909, 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 | 2026-07-04 | 9.81% | 9.73% | -0.08% |
| 2 | 2026-06-15 | 1.78% | 9.81% | +8.03% |
| 3 | 2026-05-13 | 2.22% | 1.78% | -0.44% |
| 4 | 2026-04-01 | 3.54% | 2.22% | -1.31% |
| 5 | 2026-03-31 | 5.72% | 3.54% | -2.19% |
| 6 | 2026-03-17 | 5.40% | 5.72% | +0.32% |
| 7 | 2026-03-06 | 3.43% | 5.40% | +1.97% |
| 8 | 2026-02-26 | 1.57% | 3.43% | +1.85% |
| 9 | 2026-02-25 | 1.39% | 1.57% | +0.18% |
| 10 | 2026-02-18 | 2.22% | 1.39% | -0.83% |
| 11 | 2026-01-09 | 2.42% | 2.22% | -0.20% |
| 12 | 2025-12-13 | 2.47% | 2.42% | -0.05% |
| 13 | 2025-12-02 | 3.81% | 2.47% | -1.33% |
| 14 | 2025-11-21 | 0.41% | 3.81% | +3.40% |
| 15 | 2025-11-18 | 5.98% | 0.41% | -5.57% |
| 16 | 2025-11-17 | 5.40% | 5.98% | +0.58% |
| 17 | 2025-11-02 | 3.81% | 5.40% | +1.60% |
| 18 | 2025-10-29 | 1.75% | 3.81% | +2.05% |
| 19 | 2025-10-17 | 2.47% | 1.75% | -0.72% |
| 20 | 2025-10-07 | 3.54% | 2.47% | -1.06% |
| 21 | 2025-09-13 | 3.01% | 3.54% | +0.53% |
| 22 | 2025-09-03 | 2.20% | 3.01% | +0.81% |
| 23 | 2025-09-02 | 2.12% | 2.20% | +0.07% |
| 24 | 2025-08-21 | 2.99% | 2.12% | -0.87% |
| 25 | 2025-07-31 | 3.17% | 2.99% | -0.18% |
| 26 | 2025-07-20 | 2.99% | 3.17% | +0.18% |
| 27 | 2025-07-08 | 3.33% | 2.99% | -0.34% |
| 28 | 2025-06-27 | 2.37% | 3.33% | +0.96% |
| 29 | 2025-06-15 | 3.33% | 2.37% | -0.96% |
| 30 | 2025-05-04 | 3.61% | 3.33% | -0.28% |
| 31 | 2025-04-23 | 3.33% | 3.61% | +0.28% |
| 32 | 2025-04-17 | 3.53% | 3.33% | -0.20% |
| 33 | 2025-03-30 | 4.60% | 3.53% | -1.07% |
| 34 | 2025-03-29 | 3.53% | 4.60% | +1.07% |
| 35 | 2025-03-28 | 4.60% | 3.53% | -1.07% |
| 36 | 2025-03-27 | 3.53% | 4.60% | +1.07% |
| 37 | 2025-03-20 | 4.60% | 3.53% | -1.07% |
| 38 | 2025-03-19 | 3.53% | 4.60% | +1.07% |
| 39 | 2025-03-17 | 1.20% | 3.53% | +2.33% |
| 40 | 2025-02-14 | 0.96% | 1.20% | +0.24% |
| 41 | 2025-01-09 | 1.91% | 0.96% | -0.95% |
| 42 | 2024-12-17 | 0.19% | 1.91% | +1.72% |
| 43 | 2023-03-12 | 0.19% | 0.19% | +0.00% |
| 44 | 2023-03-11 | 0.15% | 0.19% | +0.04% |
| 45 | 2023-03-07 | 1.55% | 0.15% | -1.40% |
| 46 | 2023-02-23 | 5.84% | 1.55% | -4.29% |
| 47 | 2022-12-28 | 1.55% | 5.84% | +4.29% |
| 48 | 2022-04-01 | 5.84% | 1.55% | -4.29% |
| 49 | 2022-02-04 | 15.32% | 5.84% | -9.48% |
| 50 | 2022-01-07 | 14.63% | 15.32% | +0.69% |
| 51 | 2022-01-06 | 3.68% | 14.63% | +10.95% |
| 52 | 2021-12-27 | 14.63% | 3.68% | -10.95% |
| 53 | 2021-09-22 | 13.92% | 14.63% | +0.71% |
| 54 | 2021-09-18 | 13.21% | 13.92% | +0.72% |
| 55 | 2021-09-17 | 12.48% | 13.21% | +0.73% |
| 56 | 2021-09-15 | 11.74% | 12.48% | +0.74% |
| 57 | 2021-08-26 | 10.99% | 11.74% | +0.75% |
| 58 | 2021-08-20 | 10.22% | 10.99% | +0.77% |
| 59 | 2021-07-27 | 9.45% | 10.22% | +0.78% |
| 60 | 2021-07-23 | 8.66% | 9.45% | +0.79% |
| 61 | 2021-07-22 | 1.66% | 8.66% | +7.00% |
| 62 | 2021-07-21 | — | 1.66% | — |