EPSS score history for CVE-2021-21391, 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 | 1.35% | 1.67% | +0.31% |
| 2 | 2026-05-18 | 8.30% | 1.35% | -6.95% |
| 3 | 2026-03-04 | 1.35% | 8.30% | +6.95% |
| 4 | 2026-03-01 | 8.30% | 1.35% | -6.95% |
| 5 | 2026-02-04 | 1.35% | 8.30% | +6.95% |
| 6 | 2026-02-01 | 8.30% | 1.35% | -6.95% |
| 7 | 2026-01-04 | 1.35% | 8.30% | +6.95% |
| 8 | 2026-01-01 | 8.30% | 1.35% | -6.95% |
| 9 | 2025-12-04 | 1.35% | 8.30% | +6.95% |
| 10 | 2025-12-01 | 8.30% | 1.35% | -6.95% |
| 11 | 2025-11-04 | 1.35% | 8.30% | +6.95% |
| 12 | 2025-11-01 | 8.30% | 1.35% | -6.95% |
| 13 | 2025-10-04 | 1.35% | 8.30% | +6.95% |
| 14 | 2025-10-01 | 8.30% | 1.35% | -6.95% |
| 15 | 2025-09-20 | 1.35% | 8.30% | +6.95% |
| 16 | 2025-03-30 | 1.62% | 1.35% | -0.27% |
| 17 | 2025-03-29 | 1.39% | 1.62% | +0.24% |
| 18 | 2025-03-19 | 1.27% | 1.39% | +0.12% |
| 19 | 2025-03-17 | 0.36% | 1.27% | +0.91% |
| 20 | 2024-12-17 | 0.48% | 0.36% | -0.13% |
| 21 | 2024-01-12 | 0.39% | 0.48% | +0.09% |
| 22 | 2023-11-07 | 0.27% | 0.39% | +0.11% |
| 23 | 2023-03-07 | 1.54% | 0.27% | -1.26% |
| 24 | 2022-04-01 | 11.61% | 1.54% | -10.08% |
| 25 | 2022-02-04 | 11.16% | 11.61% | +0.45% |
| 26 | 2022-01-06 | 2.72% | 11.16% | +8.44% |
| 27 | 2021-04-29 | — | 2.72% | — |