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Mallory
Critical

Use-after-free in Chrome Bluetooth on macOS leading to sandbox escape

IdentifiersCVE-2026-9881CWE-416· Use After Free

CVE-2026-9881 is a use-after-free vulnerability in the Bluetooth component of Google Chrome on macOS prior to version 148.0.7778.216. According to the provided content, exploitation requires convincing a user to install a crafted malicious Chrome extension. The flaw can then be leveraged to potentially escape Chrome's sandbox. The issue affects Chrome on Mac and is rated Critical 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 to break out of the Chrome sandbox on affected macOS systems. This would let malicious extension code gain execution outside the intended browser sandbox boundary, increasing the attacker's ability to access system resources or perform follow-on actions beyond normal extension confinement.

Mitigation

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

Until patched versions are fully deployed, reduce exposure by preventing installation of untrusted Chrome extensions, enforcing extension allowlisting, restricting extension installation to trusted sources, and monitoring for unauthorized or newly installed extensions on macOS endpoints.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on macOS to version 148.0.7778.216 or later. Apply the latest Chrome Stable release made available by Google as the vendor fix for this vulnerability.
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

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

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.
Exposure mapping

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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 activity

Community discussion across Reddit, Mastodon, and other social sources.