CVE-2021-21206highunder attackCWE-416

CVE-2021-21206: high-severity vulnerability in Google Chrome

Published · Updated

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51Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 8.8epss 9.3%
from disclosure to weapon
Published on NVDApr 26
CISA KEV+191d
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.

Not affected
1 product — because the vulnerable code is not present in the product
red_hat_products
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

Google Chrome had a flaw where it could use memory that was already freed, allowing attackers to corrupt the system's memory through a malicious webpage. This could lead to crashes or potentially allow an attacker to run malicious code.

Technical detail

Use-after-free vulnerability in Blink rendering engine allowing remote code execution via crafted HTML. Attack vector: opening a malicious webpage; impact: heap corruption potentially leading to arbitrary code execution. Fixed in Chrome 89.0.4389.128.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Use after free in Blink in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Google · Chrome