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-2026-8966 | Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 7.5 | 0.33% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8965 | Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 7.5 | 0.32% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8964 | Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 7.5 | 0.30% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8963 | Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 7.5 | 0.30% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8962 | Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 8.1 | 0.37% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8961 | Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 6.5 | 0.32% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8960 | Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 7.5 | 0.38% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8959 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 9.6 | 0.42% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8958 | Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 8.6 | 0.34% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8957 | Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 8.8 | 0.39% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8956 | Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 9.8 | 0.60% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8955 | Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 8.8 | 0.39% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8954 | Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 7.5 | 0.43% | 2026-05-19 | 2026-05-19 |
| CVE-2026-8953 | Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 9.6 | 0.53% | 2026-05-19 | 2026-05-19 |
| CVE-2026-8952 | Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 8.8 | 0.36% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8951 | Spoofing issue in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151. | 6.5 | 0.25% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8950 | Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 9.3 | 0.19% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8949 | Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 7.5 | 0.58% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8948 | Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 9.1 | 0.39% | 2026-05-19 | 2026-05-20 |
| CVE-2026-8947 | Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 7.3 | 0.37% | 2026-05-19 | 2026-05-19 |