MEDIUM CVSS 6.5
Published: 2025-07-24

CVE-2025-45731

2fauth 2fauth Security Advisory (CVE-2025-45731)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-45731 impacting 2fauth 2fauth. Evaluated with CVSS Base Score of 6.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
A group deletion race condition in 2FAuth v5.5.0 causes data inconsistencies and orphaned accounts when a group is deleted while other operations are pending.

📊 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
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
Low (I:L)
Partial data modification possible
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product 2fauth / 2fauth
Affected Versions 5.4.3
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-2025-45731 impacting 2fauth 2fauth.

⚡ Nuclei Detection Template (YAML) cve-2025-45731.yaml
id: cve-2025-45731

info:
  name: 2fauth 2fauth - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-45731 affecting 2fauth 2fauth.
    Evaluation: A group deletion race condition in 2FAuth v5.5.0 causes data inconsistencies and orphaned accounts when a group is deleted while other operations are ...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-45731
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    cvss-score: 6.5
    cve-id: CVE-2025-45731
    cwe-id: CWE-362
  tags: cve,cve-2025-45731,2fauth,2fauth,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "2fauth"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-45731.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-45731
# Target: 2fauth 2fauth | 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-2025-45731 (2fauth 2fauth)...")
    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 2fauth 2fauth scope (5.4.3).")
        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-2025-45731.sh
# Recommended Remediation & Patching Commands for CVE-2025-45731
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install 2fauth 2>/dev/null || \
sudo dnf upgrade 2fauth 2>/dev/null || \
sudo yum update 2fauth

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

# 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
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-45731 in 2fauth 2fauth?

Review vendor-specific security notices and update 2fauth 2fauth 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-2025-45731?

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-2025-45731?

CVE-2025-45731 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-2025-45731
Weakness CWE-362
Vendor 2fauth
Product 2fauth
Published 2025-07-24
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L