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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
13,434
Total alertas
3054
Críticas
10108
Altas
8
Ransomware
1778
Esta semana
RSS
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16407] 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-2026-16410] JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox …
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16402] Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 an…
Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16389] Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerabilit…
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16390] Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153,…
Mitigation bypass in the Enterprise Policies 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-2026-16393] Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Fir…
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.1 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

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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 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 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 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 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

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M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16370] Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and …
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16367] Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability wa…
Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 10.0 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16368] Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed…
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.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16355] JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox …
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.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16356] 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 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD