CRITICAL CVSS 9.0
Published: 2026-03-25

CVE-2025-32991

n2w backup\&_recovery Security Advisory (CVE-2025-32991)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-32991 impacting n2w backup\&_recovery. Evaluated with CVSS Base Score of 9.0 (CRITICAL).

Original NVD Description

Source: NIST NVD
In N2WS Backup & Recovery before 4.4.0, a two-step attack against the RESTful API results in remote code execution.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product n2w / backup\&_recovery
Affected Versions *
Weakness Enumeration CWE-362

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-2025-32991 impacting n2w backup\&_recovery.

⚡ Nuclei Detection Template (YAML) cve-2025-32991.yaml
id: cve-2025-32991

info:
  name: n2w backup\&_recovery - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2025-32991 affecting n2w backup\&_recovery.
    Evaluation: In N2WS Backup & Recovery before 4.4.0, a two-step attack against the RESTful API results in remote code execution....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-32991
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.0
    cve-id: CVE-2025-32991
    cwe-id: CWE-362
  tags: cve,cve-2025-32991,n2w,backup\&_recovery,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "backup\&_recovery"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-32991.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-32991
# Target: n2w backup\&_recovery | CVSS: 9.0 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-32991 (n2w backup\&_recovery)...")
    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 n2w backup\&_recovery 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-2025-32991.sh
# Recommended Remediation & Patching Commands for CVE-2025-32991
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install backup\&_recovery 2>/dev/null || \
sudo dnf upgrade backup\&_recovery 2>/dev/null || \
sudo yum update backup\&_recovery

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

# 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-2025-32991 in n2w backup\&_recovery?

Review vendor-specific security notices and update n2w backup\&_recovery 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-2025-32991?

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-2025-32991?

CVE-2025-32991 is classified with a CVSS 3.1 Base Score of 9.0 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.0
CRITICAL SEVERITY
CVE ID CVE-2025-32991
Weakness CWE-362
Vendor n2w
Product backup\&_recovery
Published 2026-03-25
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H