NVD や CVE、ほか複数の脅威フィードを束ね、RCE など高リスクな事象を深く追える一覧です。CVSS と EPSS を組み合わせ、Exploit 参照や PoC の有無から悪用しやすさを追跡します。ベンダー修正や緩和策の文脈とあわせて優先度を決め、対応サイクルを短く保ちつつ重要資産を守る支援をします。
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| CVE | 説明 | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|
| CVE-2026-8946 | Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 7.5 | 0.45% | 2026-05-19 | 2026-06-17 |
| CVE-2026-8945 | Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151. | 7.5 | 0.30% | 2026-05-19 | 2026-06-17 |
| CVE-2026-8401 | Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11. | 9.8 | 0.31% | 2026-05-12 | 2026-06-17 |
| CVE-2026-8391 | Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11. | 5.3 | 0.21% | 2026-05-12 | 2026-06-17 |
| CVE-2026-8390 | Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3. | 7.3 | 0.23% | 2026-05-12 | 2026-06-17 |
| CVE-2026-8389 | JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3. | 8.8 | 0.31% | 2026-05-12 | 2026-06-17 |
| CVE-2026-8388 | Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11. | 6.5 | 0.19% | 2026-05-12 | 2026-06-17 |
| CVE-2026-8094 | Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2. | 9.8 | 0.44% | 2026-05-07 | 2026-06-17 |
| CVE-2026-8093 | Memory safety bugs present in Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2 and Thunderbird 150.0.2. | 8.1 | 0.38% | 2026-05-07 | 2026-06-17 |
| CVE-2026-8092 | Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2. | 8.1 | 0.37% | 2026-05-07 | 2026-06-17 |
| CVE-2026-8091 | Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2. | 9.8 | 0.48% | 2026-05-07 | 2026-06-17 |
| CVE-2026-8090 | Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2. | 7.3 | 0.29% | 2026-05-07 | 2026-06-17 |
| CVE-2026-7324 | Memory safety bugs present in Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1 and Thunderbird 150.0.1. | 7.3 | 0.30% | 2026-04-28 | 2026-06-17 |
| CVE-2026-7323 | Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. | 7.3 | 0.31% | 2026-04-28 | 2026-06-17 |
| CVE-2026-7322 | Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. | 7.3 | 0.28% | 2026-04-28 | 2026-06-17 |
| CVE-2026-7321 | Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1. | 9.6 | 0.26% | 2026-04-28 | 2026-06-17 |
| CVE-2026-7320 | Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. | 7.5 | 0.27% | 2026-04-28 | 2026-06-17 |
| CVE-2026-6786 | Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. | 7.5 | 0.32% | 2026-04-26 | 2026-06-17 |
| CVE-2026-6785 | Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. | 7.5 | 0.34% | 2026-04-26 | 2026-06-17 |
| CVE-2026-6784 | Memory safety bugs present in Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150 and Thunderbird 150. | 7.5 | 0.28% | 2026-04-21 | 2026-06-17 |