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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 →
Última alerta publicada ahora mismo
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1778
Esta semana
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mozilla × Limpiar todo ×
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16396] Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153, Firefox ESR 140.…
Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16379] Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefo…
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16380] Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thund…
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16381] Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox …
Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16382] Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153…
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16383] Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Fir…
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16384] Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerabi…
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD

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M Alto vulnerabilidad
21/07/2026
[CVE-2026-16385] Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerabi…
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16386] Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerabi…
Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16387] Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firef…
Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16388] Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thu…
Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16371] Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, …
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16372] Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefo…
Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16373] Information disclosure in the Privacy component in Firefox for Android. This vulnerability was fixed…
Information disclosure in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16374] Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firef…
Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 7.5 NVD

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M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16375] Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 153,…
Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16376] Denial-of-service in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and…
Denial-of-service in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16377] Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox …
Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16378] Other issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Fire…
Other issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16369] Integer overflow in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 1…
Integer overflow in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD