EPSS score history for CVE-2021-23639, 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 | 19.91% | 5.33% | -14.58% |
| 2 | 2026-03-15 | 24.76% | 19.91% | -4.85% |
| 3 | 2025-11-21 | 30.02% | 24.76% | -5.26% |
| 4 | 2025-11-18 | 24.76% | 30.02% | +5.26% |
| 5 | 2025-11-12 | 16.02% | 24.76% | +8.74% |
| 6 | 2025-09-04 | 18.12% | 16.02% | -2.10% |
| 7 | 2025-07-03 | 24.76% | 18.12% | -6.64% |
| 8 | 2025-06-01 | 24.88% | 24.76% | -0.12% |
| 9 | 2025-05-26 | 17.13% | 24.88% | +7.74% |
| 10 | 2025-05-24 | 27.73% | 17.13% | -10.60% |
| 11 | 2025-05-21 | 30.54% | 27.73% | -2.81% |
| 12 | 2025-03-30 | 46.03% | 30.54% | -15.49% |
| 13 | 2025-03-29 | 30.54% | 46.03% | +15.49% |
| 14 | 2025-03-28 | 46.03% | 30.54% | -15.49% |
| 15 | 2025-03-27 | 35.01% | 46.03% | +11.02% |
| 16 | 2025-03-20 | 46.03% | 35.01% | -11.02% |
| 17 | 2025-03-19 | 35.01% | 46.03% | +11.02% |
| 18 | 2025-03-17 | 3.29% | 35.01% | +31.73% |
| 19 | 2025-03-13 | 2.34% | 3.29% | +0.94% |
| 20 | 2024-12-17 | 2.50% | 2.34% | -0.16% |
| 21 | 2024-11-15 | 2.37% | 2.50% | +0.13% |
| 22 | 2024-08-25 | 2.22% | 2.37% | +0.15% |
| 23 | 2024-07-16 | 1.89% | 2.22% | +0.33% |
| 24 | 2024-05-24 | 1.83% | 1.89% | +0.06% |
| 25 | 2024-03-03 | 1.42% | 1.83% | +0.41% |
| 26 | 2023-08-01 | 0.93% | 1.42% | +0.50% |
| 27 | 2023-07-18 | 0.77% | 0.93% | +0.16% |
| 28 | 2023-03-07 | 5.63% | 0.77% | -4.87% |
| 29 | 2022-04-01 | 46.46% | 5.63% | -40.82% |
| 30 | 2022-02-04 | 7.71% | 46.46% | +38.75% |
| 31 | 2022-01-06 | 1.83% | 7.71% | +5.88% |
| 32 | 2021-12-11 | — | 1.83% | — |