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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 hace 9 horas
13,736
Total alertas
3106
Críticas
10358
Altas
8
Ransomware
1020
Esta semana
RSS
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74977] Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR…
Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74978] Clickjacking issue in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR…
Clickjacking issue in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdaltovulnerabilidad CVSS 8.1 NVD
M Crítico vulnerabilidad
18/08/2026
[CVE-2026-74979] Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Fir…
Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdcriticovulnerabilidad CVSS 9.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74965] Privilege escalation in the Shell Integration component. This vulnerability was fixed in Firefox 154…
Privilege escalation in the Shell Integration component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74952] Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 15…
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 154.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74953] Privilege escalation in the Networking: Cookies component. This vulnerability was fixed in Firefox 1…
Privilege escalation in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74955] Privilege escalation in the Request Handling component. This vulnerability was fixed in Firefox 154 …
Privilege escalation in the Request Handling component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD

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M Alto vulnerabilidad
18/08/2026
[CVE-2026-74954] Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability w…
Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Crítico vulnerabilidad
18/08/2026
[CVE-2026-74956] Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Fir…
Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74958] Information disclosure in the WebRTC component. This vulnerability was fixed in Firefox 154, Firefox…
Information disclosure in the WebRTC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74946] Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th…
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74947] Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed …
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74949] Privilege escalation due to use-after-free in the Graphics: Canvas2D component. This vulnerability w…
Privilege escalation due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74950] Privilege escalation in the Downloads API component. This vulnerability was fixed in Firefox 154 and…
Privilege escalation in the Downloads API component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74939] Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, …
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD

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M Alto vulnerabilidad
18/08/2026
[CVE-2026-74941] Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox…
Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74942] Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefo…
Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Crítico vulnerabilidad
18/08/2026
[CVE-2026-74938] Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Fire…
Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdcriticovulnerabilidad CVSS 9.1 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74935] Privilege escalation in the DOM: Networking component. This vulnerability was fixed in Firefox 154, …
Privilege escalation in the DOM: Networking component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
18/08/2026
[CVE-2026-74937] Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox…
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
nvdaltovulnerabilidad CVSS 8.8 NVD