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.
Synology
Vendor reference — Synology · sector: Industrial & Embedded. Cumulative disclosure record across the archive.
Career totals
| All-time | YTD | |
|---|---|---|
| CVEs | 46 | 46 |
| KEV entries | 0 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 0.0 | 5.6 | .0032 | 5 | 10 | 25 | 6 |
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 |
|---|---|
| 2026-05 | 18 |
| 2026-06 | 5 |
| 2026-07 | 0 |
| 2026-08 | 4 |
| 2026-09 | 19 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2025-12686 | 9.8 | 85.8 | CRITICAL | — | 2026-05-27 |
| CVE-2026-13639 | 9.8 | 50.1 | CRITICAL | — | 2026-09-18 |
| CVE-2026-13684 | 9.8 | 46.9 | CRITICAL | — | 2026-09-18 |
| CVE-2025-13392 | 9.8 | 43.1 | CRITICAL | — | 2026-05-27 |
| CVE-2026-6205 | 8.1 | 42.1 | HIGH | — | 2026-09-18 |
| CVE-2026-40535 | 6.5 | 41.0 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40541 | 9.0 | 40.3 | CRITICAL | — | 2026-08-28 |
| CVE-2026-40530 | 8.0 | 40.3 | HIGH | — | 2026-09-18 |
| CVE-2025-14713 | 7.5 | 39.0 | HIGH | — | 2026-05-27 |
| CVE-2026-4036 | 6.5 | 36.6 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40531 | 4.3 | 35.9 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40536 | 4.3 | 34.5 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40532 | 6.5 | 34.4 | MEDIUM | — | 2026-09-18 |
| CVE-2026-13673 | 8.8 | 31.4 | HIGH | — | 2026-09-18 |
| CVE-2026-40533 | 5.3 | 29.8 | MEDIUM | — | 2026-09-18 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-40539 | 7.1 | 1.5 | HIGH | — | 2026-09-18 |
| CVE-2026-40533 | 5.3 | 29.8 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40538 | 3.7 | 28.9 | LOW | — | 2026-09-18 |
| CVE-2026-40535 | 6.5 | 41.0 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40537 | 4.3 | 23.9 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40530 | 8.0 | 40.3 | HIGH | — | 2026-09-18 |
| CVE-2026-40534 | 5.4 | 17.4 | MEDIUM | — | 2026-09-18 |
| CVE-2026-13623 | 4.8 | 14.8 | MEDIUM | — | 2026-09-18 |
| CVE-2026-13683 | 2.7 | 23.2 | LOW | — | 2026-09-18 |
| CVE-2026-40536 | 4.3 | 34.5 | MEDIUM | — | 2026-09-18 |
| CVE-2026-4036 | 6.5 | 36.6 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40532 | 6.5 | 34.4 | MEDIUM | — | 2026-09-18 |
| CVE-2026-40531 | 4.3 | 35.9 | MEDIUM | — | 2026-09-18 |
| CVE-2026-13684 | 9.8 | 46.9 | CRITICAL | — | 2026-09-18 |
| CVE-2026-13673 | 8.8 | 31.4 | HIGH | — | 2026-09-18 |
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 |
|---|---|---|
| DiskStation Manager (DSM) | 20 | 0 |
| Surveillance Station | 6 | 0 |
| Synology Chat Server | 3 | 0 |
| BeeDrive For Desktop | 2 | 0 |
| Hyper Backup | 2 | 0 |
| Synology Assistant | 2 | 0 |
KEV entries
No entries in the CISA KEV catalog.
KEV timing
| CVE | Days |
|---|---|
| — | |
| CVE | Due | Days over |
|---|---|---|
| — | ||
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.
