MEDIUM CVSS 6.5
Published: 2025-07-02

CVE-2025-27024

nokia g42_firmware Security Advisory (CVE-2025-27024)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-27024 impacting nokia g42_firmware. Evaluated with CVSS Base Score of 6.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
Unrestricted access to OS file system in SFTP service in Infinera G42 version R6.1.3 allows remote authenticated users to read/write OS files via SFTP connections. Details: Account members of the Network Administrator profile can access the target machine via SFTP with the same credentials used for SSH CLI access and are able to read all files according to the OS permission instead of remaining inside the chrooted directory position.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product nokia / g42_firmware
Affected Versions *
Weakness Enumeration CWE-280

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2025-27024 impacting nokia g42_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-27024.yaml
id: cve-2025-27024

info:
  name: nokia g42_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-27024 affecting nokia g42_firmware.
    Evaluation: Unrestricted access to OS file system in SFTP service in Infinera G42 
version R6.1.3 allows remote authenticated users to read/write OS files 
via SF...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-27024
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2025-27024
    cwe-id: CWE-280
  tags: cve,cve-2025-27024,nokia,g42_firmware,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "g42_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-27024.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-27024
# Target: nokia g42_firmware | CVSS: 6.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-27024 (nokia g42_firmware)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against nokia g42_firmware scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2025-27024.sh
# Recommended Remediation & Patching Commands for CVE-2025-27024
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install g42_firmware 2>/dev/null || \
sudo dnf upgrade g42_firmware 2>/dev/null || \
sudo yum update g42_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i g42_firmware 2>/dev/null || rpm -qa | grep -i g42_firmware

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-27024 in nokia g42_firmware?

Review vendor-specific security notices and update nokia g42_firmware packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2025-27024?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2025-27024?

CVE-2025-27024 is classified with a CVSS 3.1 Base Score of 6.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.5
MEDIUM SEVERITY
CVE ID CVE-2025-27024
Weakness CWE-280
Vendor nokia
Product g42_firmware
Published 2025-07-02
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N