CVE-2026-19166
Description
A flaw was found in Web Authentication in Google Chrome. A remote attacker could exploit a use-after-free vulnerability by enticing a user to visit a specially crafted HTML page. This could potentially allow the attacker to escape the browser's security sandbox, leading to further system compromise.
Statement
This is an Important vulnerability in Chromium's Web Authentication component that could allow a remote attacker to escape the browser's sandbox. Exploitation requires user interaction, such as visiting a specially crafted HTML page, but could lead to significant system compromise beyond the browser's confines.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
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