CVE-2021-21193highunder attackCWE-416

CVE-2021-21193: 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 10.0%
from disclosure to weapon
Published on NVDMar 16
CISA KEV+232d
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

A memory error in Google Chrome's browser engine allows attackers to crash your browser or potentially run malicious code by visiting a specially designed webpage. This happens because the browser tries to use data that has already been freed from memory.

Technical detail

Use-after-free vulnerability in Blink rendering engine (CWE-416) allows remote code execution or heap corruption via malicious HTML. Requires user interaction (visiting a crafted webpage); affected versions prior to Chrome 89.0.4389.90. Attack vector is network-based with low attack complexity.

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 89.0.4389.90 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