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 Office LTSC For Mac 2021
Product reference — Microsoft Office LTSC For Mac 2021 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 | 318 | 295 |
| KEV entries | 2 | 1 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 0.6 | 7.8 | .0050 | 2 | 219 | 89 | 8 |
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 | 10 |
| 2026-02 | 4 |
| 2026-03 | 0 |
| 2026-04 | 10 |
| 2026-05 | 11 |
| 2026-06 | 26 |
| 2026-07 | 74 |
| 2026-08 | 73 |
| 2026-09 | 87 |
| 2026-10 | 0 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2021-42292 | 7.8 | 98.7 | HIGH | YES | 2021-11-17 |
| CVE-2026-21514 | 7.8 | 74.7 | HIGH | YES | 2026-02-10 |
| CVE-2023-21716 | 9.8 | 99.7 | CRITICAL | — | 2023-02-14 |
| CVE-2026-21511 | 7.5 | 89.8 | HIGH | — | 2026-02-10 |
| CVE-2025-27751 | 7.8 | 84.1 | HIGH | — | 2025-04-08 |
| CVE-2021-40442 | 7.8 | 82.5 | HIGH | — | 2021-11-10 |
| CVE-2022-41061 | 7.8 | 67.4 | HIGH | — | 2022-11-09 |
| CVE-2025-27745 | 7.8 | 64.1 | HIGH | — | 2025-04-08 |
| CVE-2025-27748 | 7.8 | 64.1 | HIGH | — | 2025-04-08 |
| CVE-2025-27749 | 7.8 | 64.0 | HIGH | — | 2025-04-08 |
| CVE-2025-27752 | 7.8 | 62.9 | HIGH | — | 2025-04-08 |
| CVE-2025-29791 | 7.8 | 62.9 | HIGH | — | 2025-04-08 |
| CVE-2023-36895 | 7.8 | 62.8 | HIGH | — | 2023-08-08 |
| CVE-2023-35371 | 7.8 | 61.1 | HIGH | — | 2023-08-08 |
| CVE-2023-36896 | 7.8 | 61.1 | HIGH | — | 2023-08-08 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-78517 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-78518 | 8.8 | 57.1 | HIGH | — | 2026-09-08 |
| CVE-2026-78511 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-78515 | 6.5 | 59.0 | MEDIUM | — | 2026-09-08 |
| CVE-2026-78513 | 5.5 | 43.6 | MEDIUM | — | 2026-09-08 |
| CVE-2026-78509 | 9.8 | 60.8 | CRITICAL | — | 2026-09-08 |
| CVE-2026-78510 | 8.4 | 25.5 | HIGH | — | 2026-09-08 |
| CVE-2026-78505 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-78504 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-78439 | 8.8 | 56.4 | HIGH | — | 2026-09-08 |
| CVE-2026-78502 | 6.5 | 59.0 | MEDIUM | — | 2026-09-08 |
| CVE-2026-77898 | 7.5 | 47.4 | HIGH | — | 2026-09-08 |
| CVE-2026-69797 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-69767 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
| CVE-2026-69759 | 8.8 | 55.8 | HIGH | — | 2026-09-08 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2026-21514 | 2026-02-10 | 7.8 | 74.7 | HIGH |
| CVE-2021-42292 | 2021-11-17 | 7.8 | 98.7 | 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.
