CVE-2026-4446
Published: 20 March 2026
Description
Adversaries may exploit software vulnerabilities in client applications to execute code.
Security Summary
CVE-2026-4446 is a use-after-free vulnerability (CWE-416) in the WebRTC component of Google Chrome prior to version 146.0.7680.153. Published on 2026-03-20, it allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. Chromium security rates it as High severity, with a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A remote attacker without privileges can exploit this over the network with low complexity, though it requires user interaction, such as a user visiting a malicious website. Successful exploitation could result in high impacts to confidentiality, integrity, and availability through heap corruption.
Google addressed the issue in the stable channel update for desktop Chrome, as announced at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html. Further technical details are available in the Chromium bug tracker at https://issues.chromium.org/issues/486421954. Mitigation requires updating to Chrome 146.0.7680.153 or later.
Details
- CWE(s)
Affected Products
MITRE ATT&CK Enterprise Techniques
Why these techniques?
Use-after-free vulnerability in Chrome's WebRTC exploited via crafted HTML page on malicious website enables drive-by compromise (T1189) and exploitation for client execution (T1203).