CVE-2025-14175

#!/usr/bin/env python3 """ CVE-2025-14175 PoC - TP-Link TL-WR820N SSH Weak Encryption Note: This PoC is for educational and authorized testing purposes only. """ import socket import sys from paramiko import SSHClient, AutoAddPolicy def check_ssh_weak_encryption(target_ip, port=22): """ Check if target SSH server supports weak encryption algorithms """ print(f"[*] Connecting to {target_ip}:{port}") try: client = SSHClient() client.set_missing_host_key_policy(AutoAddPolicy()) # Try to connect and retrieve server banner sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, port)) banner = sock.recv(256).decode('utf-8', errors='ignore') print(f"[+] SSH Banner: {banner.strip()}") # Send SSH identification string sock.send(b"SSH-2.0-PythonTest\r\n") # Receive server algorithms data = sock.recv(1024) print(f"[*] Server response: {data}") sock.close() # Check for weak algorithms in response weak_algorithms = [b'md5', b'sha1', b'3des', b'rc4', b'arcfour'] for weak_algo in weak_algorithms: if weak_algo in data.lower(): print(f"[!] WARNING: Weak algorithm '{weak_algo.decode()}' detected!") return True except socket.timeout: print("[-] Connection timeout") return False except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip>") sys.exit(1) target = sys.argv[1] check_ssh_weak_encryption(target)

{"cve": {"id": "CVE-2025-14175", "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "published": "2025-12-29T20:15:41.400", "lastModified": "2026-03-08T01:49:47.477", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the SSH server of TP-Link TL-WR820N v2.80 allows the use of a weak cryptographic algorithm, enabling an adjacent attacker to intercept and decrypt SSH traffic. Exploitation may expose sensitive information and compromise confidentiality."}], "metrics": {"cvssMetricV40": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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": 6.0, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-327"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:tp-link:tl-wr820n_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.15.0", "matchCriteriaId": "F8EFCCF2-CBCB-46AE-B464-8720333FDBAE"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tp-link:tl-wr820n:2.80:*:*:*:*:*:*:*", "matchCriteriaId": "CC3D3814-C72C-4C01-B688-84C91CFB48DF"}]}]}], "references": [{"url": "https://www.tp-link.com/en/support/download/tl-wr820n/#Firmware", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Product"]}, {"url": "https://www.tp-link.com/in/support/download/tl-wr820n/#Firmware", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Product"]}, {"url": "https://www.tp-link.com/us/support/faq/4861/", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Vendor Advisory"]}]}}