EPSS score history for CVE-2018-1821, 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 | 23.80% | 15.80% | -8.00% |
| 2 | 2026-03-12 | 26.88% | 23.80% | -3.08% |
| 3 | 2026-03-04 | 22.30% | 26.88% | +4.58% |
| 4 | 2026-03-01 | 26.88% | 22.30% | -4.58% |
| 5 | 2026-02-04 | 22.30% | 26.88% | +4.58% |
| 6 | 2026-02-01 | 26.88% | 22.30% | -4.58% |
| 7 | 2026-01-04 | 22.30% | 26.88% | +4.58% |
| 8 | 2026-01-01 | 26.88% | 22.30% | -4.58% |
| 9 | 2025-12-31 | 29.47% | 26.88% | -2.59% |
| 10 | 2025-12-04 | 24.62% | 29.47% | +4.84% |
| 11 | 2025-12-01 | 29.47% | 24.62% | -4.84% |
| 12 | 2025-11-21 | 33.88% | 29.47% | -4.41% |
| 13 | 2025-11-18 | 29.47% | 33.88% | +4.41% |
| 14 | 2025-11-13 | 30.21% | 29.47% | -0.74% |
| 15 | 2025-11-04 | 25.30% | 30.21% | +4.91% |
| 16 | 2025-11-01 | 30.21% | 25.30% | -4.91% |
| 17 | 2025-10-04 | 25.30% | 30.21% | +4.91% |
| 18 | 2025-10-01 | 30.21% | 25.30% | -4.91% |
| 19 | 2025-09-28 | 30.59% | 30.21% | -0.38% |
| 20 | 2025-09-04 | 25.64% | 30.59% | +4.95% |
| 21 | 2025-09-01 | 30.59% | 25.64% | -4.95% |
| 22 | 2025-08-04 | 25.64% | 30.59% | +4.95% |
| 23 | 2025-08-01 | 30.59% | 25.64% | -4.95% |
| 24 | 2025-07-05 | 25.64% | 30.59% | +4.95% |
| 25 | 2025-07-01 | 30.59% | 25.64% | -4.95% |
| 26 | 2025-06-04 | 25.64% | 30.59% | +4.95% |
| 27 | 2025-06-01 | 30.59% | 25.64% | -4.95% |
| 28 | 2025-05-05 | 25.64% | 30.59% | +4.95% |
| 29 | 2025-05-01 | 30.59% | 25.64% | -4.95% |
| 30 | 2025-04-19 | 25.64% | 30.59% | +4.95% |
| 31 | 2025-04-18 | 30.59% | 25.64% | -4.95% |
| 32 | 2025-03-30 | 48.36% | 30.59% | -17.77% |
| 33 | 2025-03-29 | 30.59% | 48.36% | +17.77% |
| 34 | 2025-03-26 | 25.64% | 30.59% | +4.95% |
| 35 | 2025-03-25 | 30.59% | 25.64% | -4.95% |
| 36 | 2025-03-24 | 25.64% | 30.59% | +4.95% |
| 37 | 2025-03-22 | 30.59% | 25.64% | -4.95% |
| 38 | 2025-03-21 | 25.64% | 30.59% | +4.95% |
| 39 | 2025-03-20 | 30.59% | 25.64% | -4.95% |
| 40 | 2025-03-19 | 26.84% | 30.59% | +3.75% |
| 41 | 2025-03-17 | 6.23% | 26.84% | +20.62% |
| 42 | 2024-12-17 | 3.18% | 6.23% | +3.05% |
| 43 | 2024-09-27 | 4.41% | 3.18% | -1.23% |
| 44 | 2024-05-04 | 5.16% | 4.41% | -0.75% |
| 45 | 2024-01-11 | 4.69% | 5.16% | +0.47% |
| 46 | 2023-12-25 | 5.51% | 4.69% | -0.82% |
| 47 | 2023-12-07 | 5.34% | 5.51% | +0.17% |
| 48 | 2023-11-04 | 5.70% | 5.34% | -0.35% |
| 49 | 2023-10-03 | 6.15% | 5.70% | -0.46% |
| 50 | 2023-08-10 | 7.43% | 6.15% | -1.28% |
| 51 | 2023-04-08 | 7.68% | 7.43% | -0.25% |
| 52 | 2023-03-07 | 8.38% | 7.68% | -0.70% |
| 53 | 2022-02-04 | 31.93% | 8.38% | -23.54% |
| 54 | 2021-04-14 | — | 31.93% | — |