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Mallory
High

Use-after-free in Google Chrome Video on Windows

IdentifiersCVE-2026-6359CWE-416· Use After Free

CVE-2026-6359 is a high-severity use-after-free vulnerability in the Video component of Google Chrome on Windows prior to 147.0.7727.101. The flaw stems from video-handling code referencing memory after it has been freed, creating a dangling-pointer condition that can lead to out-of-bounds memory access. According to the provided content, exploitation is possible via a crafted HTML page, but only after the attacker has already compromised the Chrome renderer process. The issue is tracked in Chromium as issue 490251701.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can result in out-of-bounds memory access in the browser process context reachable from the vulnerable Video component. This may enable memory corruption, unintended reads or writes, sensitive data disclosure, browser instability or denial of service, and potentially further code execution depending on heap state and exploit reliability. The provided context indicates the bug is more likely to be useful as part of a multi-stage exploit chain following renderer compromise rather than as a standalone initial access vector.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by limiting use of vulnerable Chrome versions on Windows, restricting access to untrusted web content, and applying compensating controls that reduce the likelihood of renderer compromise, since exploitation requires a prior renderer-process compromise. Enterprise defenders should prioritize patching systems exposed to routine web browsing and monitor for vendor-specific updates in Chromium-based browsers.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Windows to version 147.0.7727.101 or later. The provided content also notes fixed builds 147.0.7727.101/102 for Windows and macOS and 147.0.7727.101 for Linux in the same release cycle. Organizations should also apply corresponding vendor updates for downstream Chromium-based browsers where applicable.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
GoogleChromeapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

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Social activity3

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