EPSS score history for CVE-2021-21996, 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 | 2026-07-02 | 3.45% | 3.51% | +0.06% |
| 2 | 2026-06-15 | 2.26% | 3.45% | +1.19% |
| 3 | 2026-04-19 | 2.74% | 2.26% | -0.48% |
| 4 | 2025-12-28 | 3.65% | 2.74% | -0.91% |
| 5 | 2025-12-27 | 2.74% | 3.65% | +0.91% |
| 6 | 2025-11-21 | 7.06% | 2.74% | -4.32% |
| 7 | 2025-11-18 | 2.74% | 7.06% | +4.32% |
| 8 | 2025-10-28 | 3.65% | 2.74% | -0.91% |
| 9 | 2025-10-27 | 2.75% | 3.65% | +0.90% |
| 10 | 2025-10-01 | 3.66% | 2.75% | -0.91% |
| 11 | 2025-08-07 | 3.03% | 3.66% | +0.63% |
| 12 | 2025-04-01 | 3.29% | 3.03% | -0.26% |
| 13 | 2025-03-30 | 10.27% | 3.29% | -6.98% |
| 14 | 2025-03-29 | 3.29% | 10.27% | +6.98% |
| 15 | 2025-03-19 | 2.57% | 3.29% | +0.72% |
| 16 | 2025-03-17 | 0.49% | 2.57% | +2.08% |
| 17 | 2023-12-22 | 0.24% | 0.49% | +0.25% |
| 18 | 2023-11-08 | 0.49% | 0.24% | -0.25% |
| 19 | 2023-11-01 | 0.20% | 0.49% | +0.29% |
| 20 | 2023-04-01 | 0.26% | 0.20% | -0.06% |
| 21 | 2023-03-07 | 1.03% | 0.26% | -0.78% |
| 22 | 2022-04-01 | 16.91% | 1.03% | -15.88% |
| 23 | 2022-02-04 | 7.04% | 16.91% | +9.87% |
| 24 | 2022-01-06 | 1.66% | 7.04% | +5.38% |
| 25 | 2021-11-21 | 1.45% | 1.66% | +0.20% |
| 26 | 2021-11-20 | 1.04% | 1.45% | +0.41% |
| 27 | 2021-09-25 | 0.83% | 1.04% | +0.21% |
| 28 | 2021-09-10 | 0.42% | 0.83% | +0.42% |
| 29 | 2021-09-09 | — | 0.42% | — |