CVE-2026-11645highunder attackCWE-125CWE-787

CVE-2026-11645: high-severity vulnerability in Google Chrome

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71Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA, has an official Brazilian government alert and has a public proof of concept.

ssvc Actcvss 8.8epss 2.4%
from disclosure to weapon2 days
Published on NVDJun 8
1st PoC+2d
CISA KEV+1d
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

  • CTIR Gov · ALERTA 48/2026 · 10 Jun 2026Vulnerabilidade crítica no Chromium V8 do Google.read on gov.br ↗
Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Red HatVEX document ↗
Not affected
1 product — because the vulnerable code is not present in the product
red_hat_products
Action required by CISAfederal deadline: 2026-06-23

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

A flaw in Chrome's V8 JavaScript engine allows an attacker to read and write memory outside intended boundaries through a malicious webpage, potentially executing harmful code within the browser sandbox.

Technical detail

Out-of-bounds read/write vulnerability in V8 (CWE-125, CWE-787) exploitable via crafted HTML delivered to a victim. Requires user interaction to visit a malicious page; impacts confidentiality and integrity through arbitrary code execution within sandbox confinement prior to Chrome 149.0.7827.103.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Out of bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Google · Chrome
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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