Vulnerabilidades
Resumen — últimos 7 días
Vulnerabilidades nuevas2737▼ 486 respecto a la semana anterior
Críticas / altas1302▼ 188 respecto a la semana anterior
Nueva explotación activa (KEV)3▼ 5 respecto a la semana anterior
Sin puntuar (sin CVSS)227▼ 275 respecto a la semana anterior
3953 resultados, ordenados por fecha de publicación (más recientes primero)
| CVE | Estado | Severidad | EPSS | Explotación activa | Tecnologías afectadas | Publicada ▼ | Modificada | Descripción |
|---|---|---|---|---|---|---|---|---|
| Analizada | Crítica (9.8) | 0.39% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (10) | 0.38% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | |
| Modificada | Alta (8.8) | 0.27% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | |
| Modificada | Alta (8.8) | 0.28% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 1/9/2026 | Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 153, Thunderbird 153, Firefox ESR 140.15, and Thunderbird 140.15. | |
| Analizada | Crítica (9.1) | 0.31% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. | |
| Analizada | Crítica (9.8) | 0.44% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Alta (8.8) | 0.29% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.32% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Memory safety bugs present in Thunderbird ESR 140.12. 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 ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.47% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152. 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 153, Firefox ESR 115.38, Firefox… | |
| Analizada | Crítica (9.1) | 0.26% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.22% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.40% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.39% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.40% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Alta (7.5) | 0.34% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.52% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.39% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.39% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.40% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Analizada | Crítica (9.8) | 0.21% | — | Mozilla FirefoxMozilla Thunderbird | 21/7/2026 | 24/7/2026 | Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. | |
| Modificada | Media (5.4) | 0.34% | — | Mozilla Firefox | 14/7/2026 | 22/7/2026 | We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13. | |
| Modificada | Media (4.3) | 0.49% | 💥 PoC | Mozilla Firefox | 14/7/2026 | 22/7/2026 | We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13. | |
| Analizada | Media (5.3) | 0.29% | — | Mozilla Firefox Mobile | 13/7/2026 | 14/7/2026 | Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox. This vulnerability was fixed in Firefox for iOS 152.4. | |
| Analizada | Media (6.3) | 0.22% | — | Mozilla Firefox | 7/7/2026 | 8/7/2026 | A malicious webpage could interrupt a pending navigation by enqueuing a synchronous JavaScript dialog, causing the browser UI to display the destination origin in the address bar while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 152.3. | |
| Analizada | Media (6.5) | 0.31% | — | Mozilla Thunderbird | 1/7/2026 | 6/7/2026 | An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1. |