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CVE-2026-6311 is a high-severity use of uninitialized variable vulnerability in the Accessibility component of Google Chrome on Windows. It affects Chrome versions prior to 147.0.7727.101. The flaw arises from uninitialized use within Accessibility and can be triggered through a crafted HTML page. According to the available details, exploitation requires the attacker to have already compromised the renderer process. In that post-compromise state, the vulnerability can potentially be leveraged to cross Chrome’s sandbox boundary and escape the renderer sandbox on Windows.
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No public exploit code observed for this vulnerability.
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9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity Google Chrome for Windows vulnerability involving uninitialized use in Accessibility that could allow a remote attacker, after compromising the renderer process, to potentially escape the sandbox via a crafted HTML page.
A high-severity uninitialized use vulnerability in Accessibility in Google Chrome.
A high-severity sandbox escape vulnerability in Google Chrome's Accessibility component on Windows caused by use of an uninitialized variable, allowing an attacker with renderer code execution to break out of the browser sandbox.
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.