EPSS score history for CVE-2021-3421, 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 | 2026-04-04 | 0.04% | 0.18% | +0.13% |
| 2 | 2025-11-21 | 0.12% | 0.04% | -0.08% |
| 3 | 2025-11-18 | 0.04% | 0.12% | +0.08% |
| 4 | 2025-10-19 | 0.06% | 0.04% | -0.02% |
| 5 | 2023-03-07 | 1.02% | 0.06% | -0.96% |
| 6 | 2022-04-01 | 1.79% | 1.02% | -0.77% |
| 7 | 2022-02-04 | 5.36% | 1.79% | -3.58% |
| 8 | 2022-01-06 | 1.25% | 5.36% | +4.12% |
| 9 | 2021-07-21 | 1.04% | 1.25% | +0.21% |
| 10 | 2021-05-20 | — | 1.04% | — |