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9.6Crítica KEV

CVE-2021-37973Google Chromium Portals Use-After-Free Vulnerability

Google Chrome Publicada: (hace 5 años)

Explotación conocida — Google Chromium Portals Use-After-Free Vulnerability

CISA confirmó el 03.11.2021 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 17.11.2021.

Acción requerida: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-37973

Descripción

Use after free in Portals in Google Chrome prior to 94.0.4606.61 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

Debilidad (CWE): CWE-416

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
debian debian linux 10.0
fedoraproject fedora 33
Google Chrome unspecified – < 94.0.4606.61

Referencias y parches

Coincidencias CPE (NVD) (5)
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* < 94.0.4606.61
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVE recientes del mismo producto — Google Chrome

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CVE-2026-126860
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Incorrect authorization in FileSystem in Google Chrome prior to 157.0.8103.78 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

8.8Alta
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Out of bounds read in Media in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

8.8Alta
CVE-2026-126899
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Use after free in Elements in Google Chrome prior to 157.0.8103.78 allowed a remote attacker leveraging social engineering to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

4.3Media
CVE-2026-126920
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Information leak in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

3.1Baja
CVE-2026-126841
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Out of bounds read in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

8.8Alta
CVE-2026-126868
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Type confusion in V8 in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)