Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Mozilla
Vendor reference — Mozilla · sector: Open Source Ecosystems. Cumulative disclosure record across the archive.
Career totals
| All-time | YTD | |
|---|---|---|
| CVEs | 490 | 464 |
| KEV entries | 9 | 0 |
| KEV/100 | Med CVSS | Med EPSS | C | H | M | L |
|---|---|---|---|---|---|---|
| 1.8 | 8.8 | .0029 | 139 | 200 | 128 | 0 |
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 | 1 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 6 |
| 2026-06 | 50 |
| 2026-07 | 71 |
| 2026-08 | 60 |
| 2026-09 | 191 |
| 2026-10 | 85 |
Notable CVEs
Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2016-9079 | 7.5 | 99.8 | HIGH | YES | 2018-06-11 |
| CVE-2019-11708 | 10.0 | 99.0 | CRITICAL | YES | 2019-07-23 |
| CVE-2019-17026 | 8.8 | 98.8 | HIGH | YES | 2020-03-02 |
| CVE-2019-11707 | 8.8 | 98.5 | HIGH | YES | 2019-07-23 |
| CVE-2024-9680 | 9.8 | 97.8 | CRITICAL | YES | 2024-10-15 |
| CVE-2022-26485 | 8.8 | 96.6 | HIGH | YES | 2022-12-22 |
| CVE-2020-6820 | 8.1 | 94.1 | HIGH | YES | 2020-04-24 |
| CVE-2020-6819 | 8.1 | 87.3 | HIGH | YES | 2020-04-24 |
| CVE-2022-26486 | 9.6 | 83.4 | CRITICAL | YES | 2022-12-22 |
| CVE-2016-9063 | 9.8 | 92.6 | CRITICAL | — | 2018-06-11 |
| CVE-2026-10702 | 4.3 | 57.6 | MEDIUM | — | 2026-06-02 |
| CVE-2025-49710 | 9.8 | 53.9 | CRITICAL | — | 2025-06-11 |
| CVE-2026-74987 | 9.8 | 52.8 | CRITICAL | — | 2026-08-18 |
| CVE-2026-74990 | 9.8 | 52.8 | CRITICAL | — | 2026-08-18 |
| CVE-2026-74964 | 9.8 | 51.6 | CRITICAL | — | 2026-08-18 |
Recent CVEs
| CVE | CVSS | EPSS %ile | Severity | KEV | First seen |
|---|---|---|---|---|---|
| CVE-2026-109720 | 7.1 | 3.9 | HIGH | — | 2026-10-13 |
| CVE-2026-109731 | 5.4 | 4.6 | MEDIUM | — | 2026-10-13 |
| CVE-2026-109721 | 5.4 | 15.0 | MEDIUM | — | 2026-10-13 |
| CVE-2026-109734 | 8.1 | 5.5 | HIGH | — | 2026-10-13 |
| CVE-2026-109716 | 8.1 | 22.8 | HIGH | — | 2026-10-13 |
| CVE-2026-109722 | 8.1 | 22.8 | HIGH | — | 2026-10-13 |
| CVE-2026-109712 | 7.1 | 12.1 | HIGH | — | 2026-10-13 |
| CVE-2026-109715 | 8.1 | 22.8 | HIGH | — | 2026-10-13 |
| CVE-2026-109753 | 8.1 | 26.2 | HIGH | — | 2026-10-13 |
| CVE-2026-109730 | 8.8 | 28.8 | HIGH | — | 2026-10-13 |
| CVE-2026-109733 | 8.1 | 26.2 | HIGH | — | 2026-10-13 |
| CVE-2026-109714 | 5.4 | 10.5 | MEDIUM | — | 2026-10-13 |
| CVE-2026-109723 | 5.4 | 11.3 | MEDIUM | — | 2026-10-13 |
| CVE-2026-109708 | 9.6 | 23.5 | CRITICAL | — | 2026-10-13 |
| CVE-2026-109776 | 4.2 | 3.4 | MEDIUM | — | 2026-10-13 |
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 |
|---|---|---|
| Firefox | 463 | 9 |
| Thunderbird | 456 | 9 |
| Firefox For IOS | 11 | 0 |
| Firefox ESR | 9 | 9 |
| Firefox For Android | 2 | 2 |
| Focus | 2 | 2 |
KEV entries
| CVE | KEV added | CVSS | EPSS %ile | Severity |
|---|---|---|---|---|
| CVE-2024-9680 | 2024-10-15 | 9.8 | 97.8 | CRITICAL |
| CVE-2016-9079 | 2023-06-22 | 7.5 | 99.8 | HIGH |
| CVE-2019-11708 | 2022-05-23 | 10.0 | 99.0 | CRITICAL |
| CVE-2019-11707 | 2022-05-23 | 8.8 | 98.5 | HIGH |
| CVE-2022-26485 | 2022-03-07 | 8.8 | 96.6 | HIGH |
| CVE-2022-26486 | 2022-03-07 | 9.6 | 83.4 | CRITICAL |
| CVE-2019-17026 | 2021-11-03 | 8.8 | 98.8 | HIGH |
| CVE-2020-6820 | 2021-11-03 | 8.1 | 94.1 | HIGH |
| CVE-2020-6819 | 2021-11-03 | 8.1 | 87.3 | HIGH |
KEV timing
| CVE | Days |
|---|---|
| CVE-2024-9680 | 0 |
| CVE-2020-6819 | 558 |
| CVE-2020-6820 | 558 |
| CVE-2019-17026 | 611 |
| CVE-2019-11707 | 1035 |
| CVE-2019-11708 | 1035 |
| CVE-2016-9079 | 1837 |
| CVE | Due | Days over |
|---|---|---|
| CVE-2022-26486 | 2022-03-21 | 1673 |
| CVE-2022-26485 | 2022-03-21 | 1673 |
| CVE-2020-6819 | 2022-05-03 | 1630 |
| CVE-2020-6820 | 2022-05-03 | 1630 |
| CVE-2019-17026 | 2022-05-03 | 1630 |
| CVE-2019-11707 | 2022-06-13 | 1589 |
| CVE-2019-11708 | 2022-06-13 | 1589 |
| CVE-2016-9079 | 2023-07-13 | 1194 |
| CVE-2024-9680 | 2024-11-05 | 713 |
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.
