MEDIUM CVSS 6.5
Published: 2022-10-10

CVE-2021-35226

solarwinds network_configuration_manager Security Advisory (CVE-2021-35226)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2021-35226 impacting solarwinds network_configuration_manager. Evaluated with CVSS Base Score of 6.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
An entity in Network Configuration Manager product is misconfigured and exposing password field to Solarwinds Information Service (SWIS). Exposed credentials are encrypted and require authenticated access with an NCM role.

📊 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 solarwinds / network_configuration_manager
Affected Versions *
Weakness Enumeration CWE-326

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-2021-35226 impacting solarwinds network_configuration_manager.

⚡ Nuclei Detection Template (YAML) cve-2021-35226.yaml
id: cve-2021-35226

info:
  name: solarwinds network_configuration_manager - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2021-35226 affecting solarwinds network_configuration_manager.
    Evaluation: An entity in Network Configuration Manager product is misconfigured and exposing password field to Solarwinds Information Service (SWIS). Exposed cred...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2021-35226
  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-2021-35226
    cwe-id: CWE-326
  tags: cve,cve-2021-35226,solarwinds,network_configuration_man,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "network_configuration_manager"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2021-35226.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2021-35226
# Target: solarwinds network_configuration_manager | 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-2021-35226 (solarwinds network_configuration_manager)...")
    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 network_configuration_manager 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-2021-35226.sh
# Recommended Remediation & Patching Commands for CVE-2021-35226
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install network_configuration_man 2>/dev/null || \
sudo dnf upgrade network_configuration_man 2>/dev/null || \
sudo yum update network_configuration_man

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

# 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
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2021-35226 in solarwinds network_configuration_manager?

Review vendor-specific security notices and update solarwinds network_configuration_manager 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-2021-35226?

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-2021-35226?

CVE-2021-35226 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-2021-35226
Weakness CWE-326
Vendor solarwinds
Product network_configuration_manager
Published 2022-10-10
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N