CVE-2026-9916

Description

Out of bounds write in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.3

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!--
Proof of Concept for CVE-2026-9916
This script demonstrates a potential trigger for the ANGLE OOB write.
Note: Actual exploitation requires specific heap grooming and breaching the sandbox first.
-->
<html>
<body>
<script>
function trigger_exploit() {
    try {
        // Create a canvas to access WebGL context (ANGLE)
        const canvas = document.createElement('canvas');
        const gl = canvas.getContext('webgl2');
        
        if (!gl) {
            console.log("WebGL2 not supported");
            return;
        }

        // Example of operations that might stress ANGLE memory management
        // Actual vulnerability trigger depends on specific shader/buffer manipulation
        const buffer = gl.createBuffer();
        gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
        
        // Maliciously sized data to potentially trigger OOB write
        // Size is hypothetical for the specific version < 148.0.7778.216
        const data = new Float32Array(0x100000); 
        gl.bufferData(gl.ARRAY_BUFFER, data, gl.DYNAMIC_DRAW);
        
        // Further specific WebGL calls would go here to hit the vulnerable code path
        // ... 
        
        console.log("Payload delivered, check renderer crash or sandbox escape");
    } catch (e) {
        console.error("Error during PoC execution:", e);
    }
}

// Auto-trigger on load
window.onload = trigger_exploit;
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9916
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9916
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9916/
[4] VulDB https://vuldb.com/cve/CVE-2026-9916
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/500080303

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9916", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:49.697", "lastModified": "2026-05-29T16:16:37.613", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds write in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-787"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/500080303", "source": "[email protected]"}]}}