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CVE-2026-9114 is a high-severity use-after-free vulnerability in Google Chrome's QUIC protocol stack, affecting Chrome versions prior to 148.0.7778.179 according to the CVE record, with vendor release information indicating fixes in 148.0.7778.178/179 for Windows and Mac and 148.0.7778.178 for Linux. The flaw arises from incorrect lifetime management of a QUIC-related object, where memory is freed while a dangling reference remains accessible. A remote attacker can trigger the condition by causing Chrome to process crafted QUIC network traffic, leading to memory corruption and arbitrary code execution within the browser sandbox. Because QUIC underpins HTTP/3 connectivity, exploitation can occur during ordinary browsing when the browser communicates with an attacker-controlled or attacker-influenced endpoint.
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A high-severity use-after-free vulnerability in Chrome's QUIC component.
A use-after-free vulnerability in QUIC in Google Chrome prior to version 148.0.7778.179 that allows remote code execution inside the sandbox via malicious network traffic.
A use-after-free vulnerability in Google Chrome's QUIC protocol stack that can allow remote code execution inside the Chrome sandbox via crafted network traffic.
A high-severity use-after-free vulnerability in Chrome's QUIC component.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.