MEDIUM CVSS 4.4
Published: 2020-12-16

CVE-2020-25619

solarwinds n-central Security Advisory (CVE-2020-25619)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-25619 impacting solarwinds n-central. Evaluated with CVSS Base Score of 4.4 (MEDIUM).

Original NVD Description

Source: NIST NVD
An issue was discovered in SolarWinds N-Central 12.3.0.670. The SSH component does not restrict the Communication Channel to Intended Endpoints. An attacker can leverage an SSH feature (port forwarding with a temporary key pair) to access network services on the 127.0.0.1 interface, even though this feature was only intended for user-to-agent communication.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
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
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product solarwinds / n-central
Affected Versions 12.3.0.670
Weakness Enumeration NVD-CWE-Other

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-2020-25619 impacting solarwinds n-central.

⚡ Nuclei Detection Template (YAML) cve-2020-25619.yaml
id: cve-2020-25619

info:
  name: solarwinds n-central - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2020-25619 affecting solarwinds n-central.
    Evaluation: An issue was discovered in SolarWinds N-Central 12.3.0.670. The SSH component does not restrict the Communication Channel to Intended Endpoints. An at...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-25619
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
    cvss-score: 4.4
    cve-id: CVE-2020-25619
    cwe-id: NVD-CWE-Other
  tags: cve,cve-2020-25619,solarwinds,n-central,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "n-central"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-25619.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-25619
# Target: solarwinds n-central | CVSS: 4.4 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2020-25619 (solarwinds n-central)...")
    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 solarwinds n-central scope (12.3.0.670).")
        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-2020-25619.sh
# Recommended Remediation & Patching Commands for CVE-2020-25619
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install n-central 2>/dev/null || \
sudo dnf upgrade n-central 2>/dev/null || \
sudo yum update n-central

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

# 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.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2020-25619 in solarwinds n-central?

Review vendor-specific security notices and update solarwinds n-central 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-2020-25619?

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-2020-25619?

CVE-2020-25619 is classified with a CVSS 3.1 Base Score of 4.4 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.4
MEDIUM SEVERITY
CVE ID CVE-2020-25619
Weakness NVD-CWE-Other
Vendor solarwinds
Product n-central
Published 2020-12-16
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N