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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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RSS
firefox × Limpiar todo ×
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16406] 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-2026-16407] 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-2026-16408] Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153…
Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16409] Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thun…
Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 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-2026-16411] Memory safety bugs present in Firefox 152. Some of these bugs showed evidence of memory corruption a…
Memory safety bugs present in 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 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16412] Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence…
Memory safety bugs present in 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 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdcriticovulnerabilidad CVSS 9.8 NVD

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M Alto vulnerabilidad
21/07/2026
[CVE-2026-16398] Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 153 and Thun…
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16399] Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 a…
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16400] Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 153 a…
Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16401] Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox …
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 8.8 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 Alto vulnerabilidad
21/07/2026
[CVE-2026-16405] Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Fire…
Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 7.5 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

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M Alto vulnerabilidad
21/07/2026
[CVE-2026-16391] Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox …
Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 7.5 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-2026-16394] Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Th…
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Crítico vulnerabilidad
21/07/2026
[CVE-2026-16395] Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thund…
Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdcriticovulnerabilidad CVSS 9.8 NVD
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