CVE-2026-12448 is a privilege escalation vulnerability in the WebView implementation of Google Chrome on Android devices before version 149.0.7827.155. A remote attacker can exploit this flaw by delivering a specially crafted HTML page, which leads to unauthorized privilege escalation. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability. The vulnerability is publicly disclosed with no known exploits in the wild as of the publication date. The vendor advisory link is provided but does not explicitly confirm patch availability or remediation status.

Successful exploitation allows a remote attacker to escalate privileges on affected Android devices running vulnerable versions of Google Chrome WebView. This can lead to full compromise of the affected application context, potentially impacting confidentiality, integrity, and availability of user data and system resources.

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html for current remediation guidance. Until an official fix is confirmed, users should avoid untrusted HTML content and consider updating to the latest Chrome version once available.