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Actively exploitedCVSS 8.8 · HIGH

CVE-2026-87491Arbitrary code execution in Google Chrome V8

Google Chromium V8 contains an out of bounds write vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

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Analysis

Google Chrome y navegadores basados en Chromium como Edge y Opera son vulnerables a la ejecución de código arbitrario mediante una página HTML maliciosa. Esta falla en el motor V8 está siendo explotada activamente en ataques reales. Se recomienda actualizar inmediatamente a la versión 153.0.8010.36 o superior.

Relevant roles

FrontendJavascriptciberseguridadMacosWindowsLinux

Severity

Score: 8.8(HIGH)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: REQUIRED
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Weakness (CWE): CWE-787

CISA KEV

Added to KEV: 2026-09-09
Federal patch deadline: 2026-09-23
Known ransomware use: Unknown
Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

EPSS

Probability of exploitation (next 30 days): 0.0029 (0.3%)
Percentile: 21.4%
EPSS: 2026-09-09

Affects

google:chrome

Technical description

Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Published: 9/9/2026, 1:17:05 AM
Last modified: 9/9/2026, 8:20:56 PM

References

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