Use-after-Free in Chrome FedCM (146.0.7680.164) Exec Arbitrary Code
CVE-2026-4680 Published on March 24, 2026
Use after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Vulnerability Analysis
CVE-2026-4680 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-4680 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-4680
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Affected Versions
Google Chrome:- Version 146.0.7680.165 and below 146.0.7680.165 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.