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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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M Alto vulnerabilidad
29/09/2026
[CVE-2026-100825] Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR …
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
29/09/2026
[CVE-2026-100811] 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, and Firefox ESR 140.17.
nvdcriticovulnerabilidad CVSS 9.6 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100813] Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 157…
Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100814] Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed …
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100815] Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox…
Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
29/09/2026
[CVE-2026-100800] Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was…
Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
nvdcriticovulnerabilidad CVSS 9.6 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100801] Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.…
Privilege escalation in the DLL Services 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-2026-100804] Sandbox escape due to use-after-free in the Preferences: Backend component. This vulnerability was f…
Sandbox escape due to use-after-free in the Preferences: Backend component. This vulnerability was fixed in Firefox 157.
nvdcriticovulnerabilidad CVSS 9.6 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100805] Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox…
Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 157.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
29/09/2026
[CVE-2026-100807] Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox …
Privilege escalation in the DOM: Service Workers 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-2026-100790] 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-2026-100782] Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerabil…
Privilege escalation due to incorrect boundary conditions in the Graphics 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

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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
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