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CVE-2026-6309 is a high-severity use-after-free vulnerability in the Viz component of Google Chrome affecting versions prior to 147.0.7727.101. The flaw arises from improper object lifetime management that can leave a dangling pointer after memory has been freed in the Viz compositor. Under exploit conditions, a remote attacker who has already achieved code execution in a compromised renderer process can trigger the bug via crafted HTML content and potentially cross the renderer-to-browser security boundary by escaping Chrome’s sandbox. Viz operates as a more privileged compositing process within Chromium, so memory corruption in this component can enable execution flow control outside the original renderer sandbox.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Viz component of Google Chrome that could allow a remote attacker, after compromising the renderer process, to potentially escape the sandbox via a crafted HTML page.
A high-severity use-after-free vulnerability in Viz in Google Chrome.
A high-severity use-after-free vulnerability in Google Chrome's Viz compositor that can enable a renderer-to-browser sandbox escape when chained with a separate renderer compromise.
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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.