EPSS score history for CVE-2021-1871, 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 | 0.48% | 7.12% | +6.64% |
| 2 | 2026-05-27 | 0.94% | 0.48% | -0.45% |
| 3 | 2026-04-15 | 0.79% | 0.94% | +0.14% |
| 4 | 2026-03-17 | 0.85% | 0.79% | -0.06% |
| 5 | 2025-12-03 | 0.55% | 0.85% | +0.31% |
| 6 | 2025-11-21 | 0.63% | 0.55% | -0.09% |
| 7 | 2025-11-18 | 0.55% | 0.63% | +0.09% |
| 8 | 2025-10-24 | 0.70% | 0.55% | -0.15% |
| 9 | 2025-10-11 | 0.61% | 0.70% | +0.09% |
| 10 | 2025-08-31 | 1.00% | 0.61% | -0.39% |
| 11 | 2025-03-30 | 3.77% | 1.00% | -2.78% |
| 12 | 2025-03-29 | 1.00% | 3.77% | +2.78% |
| 13 | 2025-03-26 | 1.72% | 1.00% | -0.72% |
| 14 | 2025-03-21 | 1.27% | 1.72% | +0.45% |
| 15 | 2025-03-17 | 1.72% | 1.27% | -0.45% |
| 16 | 2025-03-01 | 1.04% | 1.72% | +0.69% |
| 17 | 2025-02-04 | 0.83% | 1.04% | +0.20% |
| 18 | 2024-12-17 | 1.17% | 0.83% | -0.34% |
| 19 | 2024-07-27 | 1.29% | 1.17% | -0.12% |
| 20 | 2024-06-03 | 0.87% | 1.29% | +0.43% |
| 21 | 2023-12-17 | 0.72% | 0.87% | +0.14% |
| 22 | 2023-11-07 | 0.64% | 0.72% | +0.09% |
| 23 | 2023-10-12 | 0.45% | 0.64% | +0.19% |
| 24 | 2023-06-25 | 0.32% | 0.45% | +0.13% |
| 25 | 2023-03-07 | 3.82% | 0.32% | -3.51% |
| 26 | 2022-04-01 | 63.30% | 3.82% | -59.47% |
| 27 | 2022-02-04 | 1.51% | 63.30% | +61.79% |
| 28 | 2022-01-06 | 0.34% | 1.51% | +1.17% |
| 29 | 2021-06-08 | 1.51% | 0.34% | -1.17% |
| 30 | 2021-06-02 | 0.27% | 1.51% | +1.23% |
| 31 | 2021-04-14 | — | 0.27% | — |