CVE-2026-9992

Description

Use after free in Network in Google Chrome prior to 148.0.7778.216 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 < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
PoC for CVE-2026-9992
Trigger: Use After Free in Network Component
Description: This script attempts to trigger the UAF vulnerability by manipulating network objects.
-->
<!DOCTYPE html>
<html>
<body>
<script>
    // Simulate object creation and interaction with Network component
    let vuln_object = new SomeNetworkObject();
    
    // Trigger the free operation
    vuln_object = null;
    
    // Force garbage collection (heuristics)
    if (window.gc) {
        window.gc();
    }

    // Trigger use after free - accessing the freed memory
    try {
        trigger_exploit();
    } catch(e) {
        console.log("Exploit attempt failed");
    }

    function trigger_exploit() {
        // Placeholder for the specific UAF trigger logic
        // In a real scenario, this would involve specific API calls or DOM manipulations
        // that cause the browser to access the freed 'vuln_object' memory.
    }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9992
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9992
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9992/
[4] VulDB https://vuldb.com/cve/CVE-2026-9992
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/513177826

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9992", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:57.433", "lastModified": "2026-05-29T12:16:30.623", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Network in Google Chrome prior to 148.0.7778.216 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-416"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/513177826", "source": "[email protected]"}]}}