High

Use-after-free in Google Chrome Codecs sandbox escape

IdentifiersCVE-2026-11679CWE-416· Use After Free

CVE-2026-11679 is a high-severity use-after-free vulnerability in the Codecs component of Google Chrome on Windows prior to 149.0.7827.103. The flaw arises from improper lifetime management of memory in Codecs, creating a condition where freed memory may be reused. According to the provided vendor description, a remote attacker who has already compromised the renderer process could trigger the issue via a crafted HTML page and potentially escape Chrome’s sandbox. The issue affects the Windows platform and was rated High by Chromium.

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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 could allow an attacker who already achieved renderer-process compromise to break out of the Chrome sandbox on Windows. This could enable execution outside the renderer’s restricted security boundary and lead to broader compromise of the browser security context, with potential impacts to confidentiality, integrity, and availability on the affected system.

Mitigation

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

If immediate patching is not possible, reduce exposure by limiting use of affected Chrome versions on Windows, especially in high-risk browsing contexts, and prioritize rapid browser updates through enterprise patch management. Because the described exploitation requires prior renderer compromise, reducing exposure to untrusted web content and enforcing browser isolation controls may lower risk, but no complete workaround was provided in the supplied content.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Windows to version 149.0.7827.103 or later. For downstream Chromium-based browsers, apply the corresponding vendor updates that incorporate Chromium 149.0.7827.103 or later. Microsoft Edge should be updated to 149.0.4022.62 or later per the provided advisory.

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

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

4 SOURCESView more in app

cvefeed high severityNews

Jun 9, 2026

CVE-2026-11679 - Google Chrome Use-After-Free Codec Sandbox Escape

A use-after-free vulnerability in Codecs in Google Chrome on Windows that could allow a remote attacker, after compromising the renderer process, to potentially escape the sandbox via a crafted HTML page.

chrome releases blogNews

Jun 8, 2026

Chrome Releases: Stable Channel Update for Desktop

A high-severity use-after-free vulnerability in Chrome Codecs.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2