MEDIUM CVSS 4.6
Published: 2025-04-01

CVE-2025-28131

nagios network_analyzer Security Advisory (CVE-2025-28131)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-28131 impacting nagios network_analyzer. Evaluated with CVSS Base Score of 4.6 (MEDIUM).

Original NVD Description

Source: NIST NVD
A Broken Access Control vulnerability in Nagios Network Analyzer 2024R1.0.3 allows low-privilege users with "Read-Only" access to perform administrative actions, including stopping system services and deleting critical resources. This flaw arises due to improper authorization enforcement, enabling unauthorized modifications that compromise system integrity and availability.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Adjacent (AV:A)
Requires shared subnet / local network access
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
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 nagios / network_analyzer
Affected Versions 2024
Weakness Enumeration CWE-285

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-2025-28131 impacting nagios network_analyzer.

⚡ Nuclei Detection Template (YAML) cve-2025-28131.yaml
id: cve-2025-28131

info:
  name: nagios network_analyzer - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-28131 affecting nagios network_analyzer.
    Evaluation: A Broken Access Control vulnerability in Nagios Network Analyzer 2024R1.0.3 allows low-privilege users with "Read-Only" access to perform ad...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-28131
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
    cvss-score: 4.6
    cve-id: CVE-2025-28131
    cwe-id: CWE-285
  tags: cve,cve-2025-28131,nagios,network_analyzer,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "network_analyzer"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-28131.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-28131
# Target: nagios network_analyzer | CVSS: 4.6 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-28131 (nagios network_analyzer)...")
    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 nagios network_analyzer scope (2024).")
        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-2025-28131.sh
# Recommended Remediation & Patching Commands for CVE-2025-28131
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install network_analyzer 2>/dev/null || \
sudo dnf upgrade network_analyzer 2>/dev/null || \
sudo yum update network_analyzer

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

# 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-2025-28131 in nagios network_analyzer?

Review vendor-specific security notices and update nagios network_analyzer 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-2025-28131?

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-2025-28131?

CVE-2025-28131 is classified with a CVSS 3.1 Base Score of 4.6 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.6
MEDIUM SEVERITY
CVE ID CVE-2025-28131
Weakness CWE-285
Vendor nagios
Product network_analyzer
Published 2025-04-01
Vector CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L