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-2026-4729 | Memory safety bugs present in Firefox 148 and Thunderbird 148. 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 149 and Thunderbird 149. | 9.8 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4728 | Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149. | 6.5 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4727 | Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149. | 7.5 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4726 | Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149. | 7.5 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4724 | Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149. | 9.1 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4720 | Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 9.8 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4718 | Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 8.1 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4710 | Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 9.8 | 0.01% | 2026-03-24 | 2026-04-13 |
| 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 | 0.01% | 2026-05-07 | 2026-05-11 |
| 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 | 0.01% | 2026-05-07 | 2026-05-18 |
| CVE-2026-4721 | Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 9.8 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4694 | Incorrect boundary conditions, integer overflow in the Graphics component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 7.5 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-4689 | Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 10.0 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-2919 | Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a _self navigation to an invalid port and triggering an iframe redirect, causing the UI to display a trusted domain without user interaction. This vulnerability was fixed in Focus for iOS 148.2. | 4.3 | 0.01% | 2026-03-09 | 2026-05-06 |
| 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 | 0.01% | 2026-05-07 | 2026-05-11 |
| CVE-2026-4692 | Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 10.0 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2026-6776 | Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. | 7.8 | 0.01% | 2026-04-21 | 2026-04-22 |
| CVE-2026-4712 | Information disclosure in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 7.5 | 0.01% | 2026-03-24 | 2026-04-13 |
| CVE-2025-10859 | Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1. | 4.0 | 0.01% | 2025-09-30 | 2026-04-13 |
| CVE-2025-10536 | Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3. | 6.2 | 0.01% | 2025-09-16 | 2026-04-13 |