CVE-2026-9976

Description

Inappropriate implementation in USB 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: 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 < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
// PoC for CVE-2026-9976: Chrome USB Implementation RCE
// Description: This HTML page attempts to interact with the USB API to trigger the vulnerability.
// Requirement: User interaction (Click) is needed to satisfy UI:R vector.
-->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-9976 PoC</title>
</head>
<body>
    <h1>Chrome USB Exploit Test</h1>
    <button id="exploitBtn">Click to Trigger</button>

    <script>
        document.getElementById('exploitBtn').addEventListener('click', async () => {
            try {
                // Attempt to request a USB device, triggering the vulnerable implementation
                // In a real scenario, specific device filters or malformed data would be used
                const devices = await navigator.usb.getDevices();
                if (devices.length > 0) {
                    console.log("Device found, attempting exploit logic...");
                    // Malicious payload injection point would go here
                } else {
                    console.log("No USB devices found, requesting access...");
                    await navigator.usb.requestDevice({ filters: [] });
                }
            } catch (error) {
                console.error("Exploit trigger failed or handled:", error);
            }
        });
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9976
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9976
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9976/
[4] VulDB https://vuldb.com/cve/CVE-2026-9976
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/511732828

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9976", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:55.833", "lastModified": "2026-05-29T13:16:24.263", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in USB 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: 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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-94"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/511732828", "source": "[email protected]"}]}}