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High

Out-of-bounds memory access in WebGL in Google Chrome on Android

IdentifiersCVE-2026-4439CWE-125· Out-of-bounds Read

CVE-2026-4439 is a critical out-of-bounds memory access vulnerability in the WebGL component of Google Chrome on Android prior to version 146.0.7680.153. According to the provided content, the flaw can be triggered by a remote attacker via a crafted HTML page. The issue is described as an out-of-bounds memory access in WebGL; while the exact vulnerable function is not provided, the bug class indicates improper bounds checking during memory access within WebGL processing. Google/Chromium rated the issue Critical and indicated that exploitation could potentially lead to a sandbox escape.

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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 a remote attacker to leverage memory corruption through malicious web content and potentially escape Chrome's sandbox on Android. Based on the supporting content, Chrome vulnerabilities in this update set may enable arbitrary code execution, denial of service, or information disclosure; for this specific CVE, the explicitly stated impact is potential sandbox escape, which materially increases the severity by enabling compromise beyond the renderer context.

Mitigation

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

If immediate patching is not possible, reduce exposure by restricting access to untrusted or unknown websites, preventing users from opening attacker-controlled HTML content, and using mobile application management or enterprise browser controls to limit browsing to trusted destinations. These measures are only temporary risk reductions; vendor patching is required to fully address the flaw.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Android to version 146.0.7680.153 or later. The vulnerability affects versions prior to 146.0.7680.153, and applying the vendor-provided update is the primary remediation.
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-2026-4439
NVD
nvd.nist.gov/vuln/detail/CVE-2026-4439
MITRE CWE · CWE-125
Out-of-bounds Read
Vendor Advisory
chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html
Issue Tracking
issues.chromium.org/issues/475877320