Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Windows 11 Version 21H2
Product reference — Windows 11 Version 21H2 by Microsoft · sector: Operating Systems & Platforms. Cumulative disclosure record for this product across the archive.
Follow Windows 11 Version 21H2 — Atom feed
Product totals
| All-time | YTD | |
|---|---|---|
| CVEs | 330 | 0 |
| KEV entries | 67 | 1 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 20.3 | 7.8 | .0159 | 12 | 236 | 82 | 0 |
KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over this product's disclosures. C/H/M/L = disclosures by CVSS severity band.
Monthly disclosures
Trend (by first-seen month, full archive): ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁▁▁▁▅▁▁▅▁▁▁▁▁▅▁▁▁▁▁▅▁▁▁▄▁▂▄█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
| Month | New CVEs |
|---|---|
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 0 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2021-34527 | 8.8 | 100.0 | HIGH | YES | 2021-11-03 |
| CVE-2024-21412 | 8.1 | 99.9 | HIGH | YES | 2024-02-13 |
| CVE-2022-30190 | 7.8 | 99.9 | HIGH | YES | 2022-06-14 |
| CVE-2023-36884 | 7.5 | 99.9 | HIGH | YES | 2023-07-17 |
| CVE-2023-36025 | 8.8 | 99.8 | HIGH | YES | 2023-11-14 |
| CVE-2024-38112 | 7.5 | 99.7 | HIGH | YES | 2024-07-09 |
| CVE-2022-26923 | 8.8 | 99.7 | HIGH | YES | 2022-05-10 |
| CVE-2023-24880 | 4.4 | 99.6 | MEDIUM | YES | 2023-03-14 |
| CVE-2022-44698 | 5.4 | 99.5 | MEDIUM | YES | 2022-12-13 |
| CVE-2021-40449 | 7.8 | 99.5 | HIGH | YES | 2021-10-13 |
| CVE-2024-30088 | 7.0 | 99.3 | HIGH | YES | 2024-10-15 |
| CVE-2022-34713 | 7.8 | 99.3 | HIGH | YES | 2022-08-09 |
| CVE-2024-43572 | 7.8 | 99.3 | HIGH | YES | 2024-10-08 |
| CVE-2024-21338 | 7.8 | 99.1 | HIGH | YES | 2024-03-04 |
| CVE-2022-21882 | 7.8 | 99.1 | HIGH | YES | 2022-02-04 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2024-35250 | 7.8 | 97.9 | HIGH | YES | 2024-12-16 |
| CVE-2024-30088 | 7.0 | 99.3 | HIGH | YES | 2024-10-15 |
| CVE-2024-43615 | 7.1 | 68.3 | HIGH | — | 2024-10-08 |
| CVE-2024-43599 | 8.8 | 72.4 | HIGH | — | 2024-10-08 |
| CVE-2024-43585 | 5.5 | 40.0 | MEDIUM | — | 2024-10-08 |
| CVE-2024-43584 | 7.7 | 43.4 | HIGH | — | 2024-10-08 |
| CVE-2024-43583 | 7.8 | 70.4 | HIGH | — | 2024-10-08 |
| CVE-2024-43582 | 8.1 | 87.6 | HIGH | — | 2024-10-08 |
| CVE-2024-43581 | 7.1 | 71.8 | HIGH | — | 2024-10-08 |
| CVE-2024-43574 | 8.3 | 66.2 | HIGH | — | 2024-10-08 |
| CVE-2024-43573 | 6.5 | 98.8 | MEDIUM | YES | 2024-10-08 |
| CVE-2024-43572 | 7.8 | 99.3 | HIGH | YES | 2024-10-08 |
| CVE-2024-43570 | 6.4 | 40.7 | MEDIUM | — | 2024-10-08 |
| CVE-2024-43565 | 7.5 | 82.1 | HIGH | — | 2024-10-08 |
| CVE-2024-43563 | 7.8 | 37.5 | HIGH | — | 2024-10-08 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2023-36424 | 2026-04-13 | 7.8 | 96.1 | HIGH |
| CVE-2021-43226 | 2025-10-06 | 7.8 | 87.3 | HIGH |
| CVE-2024-35250 | 2024-12-16 | 7.8 | 97.9 | HIGH |
| CVE-2024-30088 | 2024-10-15 | 7.0 | 99.3 | HIGH |
| CVE-2024-43573 | 2024-10-08 | 6.5 | 98.8 | MEDIUM |
| CVE-2024-43572 | 2024-10-08 | 7.8 | 99.3 | HIGH |
| CVE-2024-43461 | 2024-09-16 | 8.8 | 99.0 | HIGH |
| CVE-2024-38217 | 2024-09-10 | 5.4 | 95.5 | MEDIUM |
| CVE-2024-38014 | 2024-09-10 | 7.8 | 93.4 | HIGH |
| CVE-2024-38178 | 2024-08-13 | 7.5 | 98.6 | HIGH |
| CVE-2024-38213 | 2024-08-13 | 6.5 | 96.4 | MEDIUM |
| CVE-2024-38193 | 2024-08-13 | 7.8 | 98.1 | HIGH |
| CVE-2024-38106 | 2024-08-13 | 7.0 | 93.4 | HIGH |
| CVE-2024-38107 | 2024-08-13 | 7.8 | 75.5 | HIGH |
| CVE-2024-38112 | 2024-07-09 | 7.5 | 99.7 | HIGH |
| CVE-2024-38080 | 2024-07-09 | 7.8 | 94.1 | HIGH |
| CVE-2024-26169 | 2024-06-13 | 7.8 | 90.3 | HIGH |
| CVE-2024-30051 | 2024-05-14 | 7.8 | 92.8 | HIGH |
| CVE-2024-30040 | 2024-05-14 | 8.8 | 90.1 | HIGH |
| CVE-2024-29988 | 2024-04-30 | 8.8 | 98.7 | HIGH |
| CVE-2022-38028 | 2024-04-23 | 7.8 | 96.6 | HIGH |
| CVE-2024-21338 | 2024-03-04 | 7.8 | 99.1 | HIGH |
| CVE-2023-29360 | 2024-02-29 | 8.4 | 97.6 | HIGH |
| CVE-2024-21412 | 2024-02-13 | 8.1 | 99.9 | HIGH |
| CVE-2024-21351 | 2024-02-13 | 7.6 | 98.0 | HIGH |
Related
Vendor: Microsoft — all products and the full vendor record.
Methodology
A product is a (vendor, product) pair as named in the affected-product data. Rate statistics are arithmetic over published figures. Counts key to first-seen day. Raw counts are not comparable across products; this is a reference page assembled from the public record, not a ranking by our judgment.
Sources. CVE Program (cvelistV5), NVD (NIST), CISA KEV, FIRST EPSS.
