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.
Microsoft Exchange Server 2016 Cumulative Update 23
Product reference — Microsoft Exchange Server 2016 Cumulative Update 23 by Microsoft · sector: Operating Systems & Platforms. Cumulative disclosure record for this product across the archive.
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Product totals
| All-time | YTD | |
|---|---|---|
| CVEs | 46 | 30 |
| KEV entries | 6 | 2 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 13.0 | 8.1 | .0089 | 5 | 29 | 12 | 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 | 1 |
| 2026-03 | 0 |
| 2026-04 | 1 |
| 2026-05 | 1 |
| 2026-06 | 7 |
| 2026-07 | 4 |
| 2026-08 | 7 |
| 2026-09 | 8 |
| 2026-10 | 1 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2022-41082 | 8.0 | 100.0 | HIGH | YES | 2022-10-03 |
| CVE-2022-41040 | 8.8 | 100.0 | HIGH | YES | 2022-10-03 |
| CVE-2022-41080 | 8.8 | 99.5 | HIGH | YES | 2023-01-10 |
| CVE-2023-21529 | 8.8 | 99.1 | HIGH | YES | 2026-04-13 |
| CVE-2024-21410 | 9.8 | 96.1 | CRITICAL | YES | 2024-02-15 |
| CVE-2026-42897 | 8.1 | 42.2 | HIGH | YES | 2026-05-15 |
| CVE-2023-21707 | 8.8 | 99.6 | HIGH | — | 2023-02-14 |
| CVE-2023-38181 | 8.8 | 95.7 | HIGH | — | 2023-08-08 |
| CVE-2026-21527 | 6.5 | 94.7 | MEDIUM | — | 2026-02-10 |
| CVE-2023-21710 | 7.2 | 94.5 | HIGH | — | 2023-02-14 |
| CVE-2023-35388 | 8.0 | 93.8 | HIGH | — | 2023-08-08 |
| CVE-2023-38182 | 8.0 | 93.0 | HIGH | — | 2023-08-08 |
| CVE-2023-21706 | 8.8 | 90.4 | HIGH | — | 2023-02-14 |
| CVE-2023-38185 | 8.8 | 85.3 | HIGH | — | 2023-08-08 |
| CVE-2026-55009 | 7.8 | 84.3 | HIGH | — | 2026-07-14 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-96940 | 8.8 | 40.5 | HIGH | — | 2026-10-02 |
| CVE-2026-69641 | 9.1 | 57.2 | CRITICAL | — | 2026-09-08 |
| CVE-2026-69380 | 8.1 | 51.2 | HIGH | — | 2026-09-08 |
| CVE-2026-69382 | 5.9 | 38.6 | MEDIUM | — | 2026-09-08 |
| CVE-2026-69378 | 7.5 | 66.5 | HIGH | — | 2026-09-08 |
| CVE-2026-69375 | 6.5 | 49.2 | MEDIUM | — | 2026-09-08 |
| CVE-2026-69356 | 9.3 | 53.7 | CRITICAL | — | 2026-09-08 |
| CVE-2026-69361 | 6.5 | 56.5 | MEDIUM | — | 2026-09-08 |
| CVE-2026-69355 | 8.8 | 58.8 | HIGH | — | 2026-09-08 |
| CVE-2026-65813 | 8.8 | 59.5 | HIGH | — | 2026-08-11 |
| CVE-2026-62915 | 6.5 | 49.2 | MEDIUM | — | 2026-08-11 |
| CVE-2026-62913 | 8.8 | 58.8 | HIGH | — | 2026-08-11 |
| CVE-2026-62914 | 5.4 | 36.7 | MEDIUM | — | 2026-08-11 |
| CVE-2026-62911 | 8.0 | 51.4 | HIGH | — | 2026-08-11 |
| CVE-2026-62912 | 6.5 | 79.8 | MEDIUM | — | 2026-08-11 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2026-42897 | 2026-05-15 | 8.1 | 42.2 | HIGH |
| CVE-2023-21529 | 2026-04-13 | 8.8 | 99.1 | HIGH |
| CVE-2024-21410 | 2024-02-15 | 9.8 | 96.1 | CRITICAL |
| CVE-2022-41080 | 2023-01-10 | 8.8 | 99.5 | HIGH |
| CVE-2022-41040 | 2022-09-30 | 8.8 | 100.0 | HIGH |
| CVE-2022-41082 | 2022-09-30 | 8.0 | 100.0 | 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.
