EPSS score history for CVE-2021-4391, 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 | 0.40% | 0.48% | +0.08% |
| 2 | 2026-06-15 | 0.09% | 0.40% | +0.31% |
| 3 | 2025-11-21 | 0.15% | 0.09% | -0.06% |
| 4 | 2025-11-18 | 0.12% | 0.15% | +0.03% |
| 5 | 2025-03-30 | 1.21% | 0.12% | -1.09% |
| 6 | 2025-03-29 | 0.12% | 1.21% | +1.09% |
| 7 | 2025-03-24 | 0.53% | 0.12% | -0.40% |
| 8 | 2025-03-23 | 0.12% | 0.53% | +0.40% |
| 9 | 2025-03-17 | 0.04% | 0.12% | +0.08% |
| 10 | 2024-12-17 | 0.17% | 0.04% | -0.12% |
| 11 | 2024-08-02 | 0.08% | 0.17% | +0.08% |
| 12 | 2023-07-01 | — | 0.08% | — |