Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Qnap Systems
Vendor reference — Qnap Systems · sector: Other. Cumulative disclosure record across the archive.
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Career totals
| All-time | YTD | |
|---|---|---|
| CVEs | 34 | 26 |
| KEV entries | 8 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 23.5 | 6.2 | .0048 | 5 | 6 | 16 | 7 |
KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over all 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 | 24 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 2 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2022-27593 | 10.0 | 99.8 | CRITICAL | YES | 2022-09-08 |
| CVE-2021-28799 | 10.0 | 99.6 | CRITICAL | YES | 2021-05-13 |
| CVE-2023-47565 | 8.0 | 99.4 | HIGH | YES | 2023-12-08 |
| CVE-2020-2509 | 9.8 | 98.4 | CRITICAL | YES | 2021-04-17 |
| CVE-2018-19953 | 6.1 | 98.1 | MEDIUM | YES | 2022-05-24 |
| CVE-2018-19949 | 9.8 | 98.1 | CRITICAL | YES | 2022-05-24 |
| CVE-2018-19943 | 5.4 | 97.6 | MEDIUM | YES | 2022-05-24 |
| CVE-2020-2506 | 7.3 | 79.8 | HIGH | YES | 2021-02-03 |
| CVE-2026-22893 | 8.6 | 64.2 | HIGH | — | 2026-06-10 |
| CVE-2025-66273 | 8.6 | 63.1 | HIGH | — | 2026-06-10 |
| CVE-2025-66279 | 8.6 | 63.1 | HIGH | — | 2026-06-10 |
| CVE-2026-24719 | 6.1 | 60.8 | MEDIUM | — | 2026-06-10 |
| CVE-2026-44083 | 8.7 | 47.4 | HIGH | — | 2026-06-09 |
| CVE-2026-26240 | 1.3 | 44.7 | LOW | — | 2026-06-10 |
| CVE-2026-26241 | 1.3 | 44.7 | LOW | — | 2026-06-10 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2024-27123 | 5.2 | 2.2 | MEDIUM | — | 2026-09-18 |
| CVE-2024-38639 | 4.8 | 14.4 | MEDIUM | — | 2026-09-18 |
| CVE-2026-26241 | 1.3 | 44.7 | LOW | — | 2026-06-10 |
| CVE-2026-26240 | 1.3 | 44.7 | LOW | — | 2026-06-10 |
| CVE-2026-26239 | 6.3 | 41.8 | MEDIUM | — | 2026-06-10 |
| CVE-2026-26237 | 6.6 | 39.2 | MEDIUM | — | 2026-06-10 |
| CVE-2026-24724 | 6.2 | 24.9 | MEDIUM | — | 2026-06-10 |
| CVE-2026-24720 | 1.3 | 29.8 | LOW | — | 2026-06-10 |
| CVE-2026-24719 | 6.1 | 60.8 | MEDIUM | — | 2026-06-10 |
| CVE-2026-24717 | 1.2 | 31.1 | LOW | — | 2026-06-10 |
| CVE-2026-24716 | 1.2 | 24.0 | LOW | — | 2026-06-10 |
| CVE-2026-22899 | 1.3 | 29.8 | LOW | — | 2026-06-10 |
| CVE-2026-22893 | 8.6 | 64.2 | HIGH | — | 2026-06-10 |
| CVE-2025-66281 | 6.9 | 37.4 | MEDIUM | — | 2026-06-10 |
| CVE-2025-66280 | 5.1 | 35.6 | MEDIUM | — | 2026-06-10 |
Products
This vendor's products with a reference page (≥2 disclosures), by CVE count. A monolithic vendor total dilutes signal; product pages sharpen it.
| Product | CVEs | KEV |
|---|---|---|
| QTS | 17 | 4 |
| QuTS Hero | 14 | 1 |
| File Station 5 | 6 | 0 |
| QuMagie | 3 | 0 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2023-47565 | 2023-12-21 | 8.0 | 99.4 | HIGH |
| CVE-2022-27593 | 2022-09-08 | 10.0 | 99.8 | CRITICAL |
| CVE-2018-19949 | 2022-05-24 | 9.8 | 98.1 | CRITICAL |
| CVE-2018-19953 | 2022-05-24 | 6.1 | 98.1 | MEDIUM |
| CVE-2018-19943 | 2022-05-24 | 5.4 | 97.6 | MEDIUM |
| CVE-2020-2509 | 2022-04-11 | 9.8 | 98.4 | CRITICAL |
| CVE-2021-28799 | 2022-03-31 | 10.0 | 99.6 | CRITICAL |
| CVE-2020-2506 | 2022-03-25 | 7.3 | 79.8 | HIGH |
KEV timing
| CVE | Days |
|---|---|
| CVE-2018-19943 | 0 |
| CVE-2018-19949 | 0 |
| CVE-2018-19953 | 0 |
| CVE-2022-27593 | 0 |
| CVE-2023-47565 | 13 |
| CVE-2021-28799 | 322 |
| CVE-2020-2509 | 359 |
| CVE-2020-2506 | 415 |
| CVE | Due | Days over |
|---|---|---|
| CVE-2020-2506 | 2022-04-15 | 1633 |
| CVE-2021-28799 | 2022-04-21 | 1627 |
| CVE-2020-2509 | 2022-05-02 | 1616 |
| CVE-2018-19943 | 2022-06-14 | 1573 |
| CVE-2018-19953 | 2022-06-14 | 1573 |
| CVE-2018-19949 | 2022-06-14 | 1573 |
| CVE-2022-27593 | 2022-09-29 | 1466 |
| CVE-2023-47565 | 2024-01-11 | 997 |
Methodology
Rate statistics are arithmetic over published figures: KEV/100 = KEV entries ÷ CVEs × 100; medians are taken over this vendor's disclosures. Vendor names are normalized (case, punctuation, common aliases) before aggregation; monthly counts are keyed to first-seen day, the day this archive first observed the record, not the upstream publication date.
Raw counts are not comparable across vendors: disclosure practices, product breadth, and CNA conventions differ widely, so a larger number here does not mean less secure software. This is a reference page assembled from the public record — not a record of its own, and not a ranking of vendors by our judgment.
Sources. CVE records from the CVE Program (cvelistV5); enrichment from NVD (NIST); known-exploited status from the CISA KEV catalog; exploit probability from FIRST EPSS.
