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Alertas de Seguridad de la Información

Vulnerabilidades explotadas activamente, incidentes y análisis relevantes para México y LATAM. Actualizado automáticamente desde fuentes oficiales.

48 vulnerabilidades en CISA KEV — explotación activa confirmada Ver todas →
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cwe-416 × 30 días × Limpiar todo ×
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100790] Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157…
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100791] Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,…
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100796] Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157…
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100797] Privilege escalation due to use-after-free in the Graphics: WebRender component. This vulnerability …
Privilege escalation due to use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100784] Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox ESR …
Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100785] Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,…
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
29/09/2026
[CVE-2026-100786] Sandbox escape due to use-after-free in the Graphics component. This vulnerability was fixed in Fire…
Sandbox escape due to use-after-free in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdcriticovulnerabilidad CVSS 9.6 NVD

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M Alto vulnerabilidad
29/09/2026
[CVE-2026-100789] Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.…
Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100776] Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR…
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100777] Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.…
Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
29/09/2026
[CVE-2026-100778] Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed…
Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdcriticovulnerabilidad CVSS 9.6 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100779] Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157…
Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100780] Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,…
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100768] Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100769] Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR…
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD

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M Crítico vulnerabilidad
29/09/2026
[CVE-2026-100770] Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was…
Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdcriticovulnerabilidad CVSS 9.6 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100772] Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,…
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100773] Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox ESR 153.…
Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100774] Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,…
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100757] Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 1…
Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdaltovulnerabilidad CVSS 8.8 NVD