EPSS score history for CVE-2021-21986, 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 | 2026-06-21 | 12.28% | 12.92% | +0.64% |
| 2 | 2026-06-15 | 1.49% | 12.28% | +10.78% |
| 3 | 2026-03-04 | 0.92% | 1.49% | +0.57% |
| 4 | 2026-03-01 | 1.49% | 0.92% | -0.57% |
| 5 | 2026-02-04 | 0.92% | 1.49% | +0.57% |
| 6 | 2026-02-01 | 1.49% | 0.92% | -0.57% |
| 7 | 2026-01-04 | 0.92% | 1.49% | +0.57% |
| 8 | 2026-01-01 | 1.49% | 0.92% | -0.57% |
| 9 | 2025-12-08 | 1.65% | 1.49% | -0.16% |
| 10 | 2025-12-04 | 1.02% | 1.65% | +0.64% |
| 11 | 2025-12-01 | 1.65% | 1.02% | -0.64% |
| 12 | 2025-11-21 | 6.85% | 1.65% | -5.19% |
| 13 | 2025-11-18 | 1.65% | 6.85% | +5.19% |
| 14 | 2025-11-04 | 1.02% | 1.65% | +0.64% |
| 15 | 2025-11-01 | 1.65% | 1.02% | -0.64% |
| 16 | 2025-10-21 | 0.98% | 1.65% | +0.67% |
| 17 | 2025-10-04 | 0.87% | 0.98% | +0.12% |
| 18 | 2025-10-01 | 0.98% | 0.87% | -0.12% |
| 19 | 2025-09-04 | 0.87% | 0.98% | +0.12% |
| 20 | 2025-09-01 | 0.98% | 0.87% | -0.12% |
| 21 | 2025-08-05 | 0.87% | 0.98% | +0.12% |
| 22 | 2025-08-01 | 0.98% | 0.87% | -0.12% |
| 23 | 2025-07-29 | 1.20% | 0.98% | -0.21% |
| 24 | 2025-07-04 | 1.05% | 1.20% | +0.14% |
| 25 | 2025-07-01 | 1.20% | 1.05% | -0.14% |
| 26 | 2025-06-04 | 1.05% | 1.20% | +0.14% |
| 27 | 2025-06-01 | 1.68% | 1.05% | -0.62% |
| 28 | 2025-05-08 | 1.00% | 1.68% | +0.68% |
| 29 | 2025-05-04 | 1.20% | 1.00% | -0.20% |
| 30 | 2025-05-01 | 1.00% | 1.20% | +0.20% |
| 31 | 2025-04-24 | 1.35% | 1.00% | -0.35% |
| 32 | 2025-04-17 | 1.62% | 1.35% | -0.27% |
| 33 | 2025-04-16 | 1.35% | 1.62% | +0.27% |
| 34 | 2025-03-30 | 19.69% | 1.35% | -18.34% |
| 35 | 2025-03-29 | 1.35% | 19.69% | +18.34% |
| 36 | 2025-03-24 | 11.90% | 1.35% | -10.55% |
| 37 | 2025-03-23 | 1.35% | 11.90% | +10.55% |
| 38 | 2025-03-22 | 1.62% | 1.35% | -0.27% |
| 39 | 2025-03-21 | 1.35% | 1.62% | +0.27% |
| 40 | 2025-03-17 | 0.38% | 1.35% | +0.97% |
| 41 | 2024-12-17 | 0.21% | 0.38% | +0.17% |
| 42 | 2024-02-09 | 0.32% | 0.21% | -0.11% |
| 43 | 2023-03-07 | 0.89% | 0.32% | -0.57% |
| 44 | 2022-04-01 | 9.03% | 0.89% | -8.14% |
| 45 | 2022-02-04 | 2.74% | 9.03% | +6.29% |
| 46 | 2022-01-06 | 0.62% | 2.74% | +2.12% |
| 47 | 2021-05-27 | — | 0.62% | — |