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High

Use-after-free in Google Chrome GPU on Mac

IdentifiersCVE-2026-12023CWE-416· Use After Free

CVE-2026-12023 is a use-after-free vulnerability in the GPU component of Google Chrome affecting Mac versions prior to 149.0.7827.115. According to the provided content, a remote attacker could trigger the flaw using a crafted HTML page, but successful exploitation requires that the attacker has already compromised the renderer process. The vulnerability could then be leveraged to potentially escape Chrome’s sandbox. Chromium rates the issue as High severity.

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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 potentially escape the Chrome sandbox on affected Mac systems. This could expand the attacker’s capabilities beyond renderer confinement and may enable broader access to system resources, higher-impact code execution in a less restricted context, and compromise of confidentiality, integrity, and availability.

Mitigation

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

No specific workaround or temporary mitigation was provided in the supplied content. The practical mitigation is to apply the vendor patch promptly. Until patched, reducing exposure to untrusted web content may lower risk, but this is not a vendor-provided fix and does not remove the underlying vulnerability.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Mac to version 149.0.7827.115 or later. For Debian chromium deployments, apply the vendor security update and upgrade to a fixed package version such as 149.0.7827.114-1~deb12u1 on Debian oldstable (bookworm) or 149.0.7827.114-1~deb13u1 on Debian stable (trixie), as provided in the 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

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

5 SOURCESView more in app
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

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-12023
NVD
nvd.nist.gov/vuln/detail/CVE-2026-12023
MITRE CWE · CWE-416
Use After Free
Vendor Advisory
chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html
Issue Tracking
issues.chromium.org/issues/517018374