EPSS score history for CVE-2021-38556, 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 | 18.63% | 13.04% | -5.59% |
| 2 | 2025-11-21 | 16.94% | 18.63% | +1.70% |
| 3 | 2025-11-18 | 18.63% | 16.94% | -1.70% |
| 4 | 2025-03-30 | 30.19% | 18.63% | -11.55% |
| 5 | 2025-03-29 | 18.63% | 30.19% | +11.55% |
| 6 | 2025-03-17 | 5.82% | 18.63% | +12.82% |
| 7 | 2025-01-27 | 4.47% | 5.82% | +1.35% |
| 8 | 2024-12-17 | 3.63% | 4.47% | +0.84% |
| 9 | 2024-11-10 | 2.62% | 3.63% | +1.01% |
| 10 | 2024-08-27 | 1.87% | 2.62% | +0.76% |
| 11 | 2024-07-16 | 2.62% | 1.87% | -0.76% |
| 12 | 2024-05-09 | 1.85% | 2.62% | +0.77% |
| 13 | 2024-04-26 | 1.82% | 1.85% | +0.04% |
| 14 | 2024-03-18 | 1.73% | 1.82% | +0.09% |
| 15 | 2024-02-20 | 1.92% | 1.73% | -0.19% |
| 16 | 2024-01-24 | 1.79% | 1.92% | +0.13% |
| 17 | 2023-09-07 | 0.64% | 1.79% | +1.16% |
| 18 | 2023-08-09 | 0.29% | 0.64% | +0.35% |
| 19 | 2023-04-15 | 0.16% | 0.29% | +0.12% |
| 20 | 2023-03-07 | 2.07% | 0.16% | -1.91% |
| 21 | 2022-04-01 | 11.75% | 2.07% | -9.69% |
| 22 | 2022-02-04 | 6.22% | 11.75% | +5.53% |
| 23 | 2022-01-06 | 1.46% | 6.22% | +4.77% |
| 24 | 2021-08-25 | — | 1.46% | — |