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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
21/07/2026
[CVE-2026-16366] Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 a…
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
21/07/2026
[CVE-2026-16362] Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Fi…
Use-after-free in the WebRTC: Audio/Video 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-2026-16354] Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox …
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12324] Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed i…
Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 7.3 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12326] Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of…
Memory safety bugs present in Firefox 151 and Thunderbird 151. 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 152 and Thunderbird 152.
nvdaltovulnerabilidad CVSS 8.1 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12327] Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbir…
Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 8.1 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12328] Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefo…
Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbi…
nvdaltovulnerabilidad CVSS 8.1 NVD

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M Alto vulnerabilidad
16/06/2026
[CVE-2026-12314] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140…
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12317] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird …
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12318] Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Fir…
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
nvdaltovulnerabilidad CVSS 7.3 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12310] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140…
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12312] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140…
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12305] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140…
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12289] Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 1…
Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12290] Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140…
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 8.1 NVD

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M Alto vulnerabilidad
16/06/2026
[CVE-2026-12291] Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firef…
Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 8.8 NVD
M Alto vulnerabilidad
16/06/2026
[CVE-2026-12292] Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 15…
Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
nvdaltovulnerabilidad CVSS 8.1 NVD
M Alto vulnerabilidad
12/06/2026
[CVE-2026-12068] Information disclosure vulnerability in Avira Password Manager when used with Mozilla Firefox may al…
Information disclosure vulnerability in Avira Password Manager when used with Mozilla Firefox may allow a remote attacker operating a cross-origin iframe to obtain credentials autofilled for the parent web page via incorrect autofill field selection. This issue affects Avira Password Manager when used with Mozilla Firefox on Windows, macOS, and Linux.
nvdaltovulnerabilidad CVSS 7.4 NVD
M Alto vulnerabilidad
09/06/2026
[CVE-2026-11799] UXSS in Focus for iOS / Klar Webkit navigation. This vulnerability was fixed in Focus for iOS 151.3.…
UXSS in Focus for iOS / Klar Webkit navigation. This vulnerability was fixed in Focus for iOS 151.3.1 and Klar for iOS 151.3.1.
nvdaltovulnerabilidad CVSS 7.5 NVD
M Alto vulnerabilidad
02/06/2026
[CVE-2026-10701] Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firef…
Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 151.0.3.
nvdaltovulnerabilidad CVSS 7.5 NVD