HIGH CVSS 7.5
Published: 2025-06-04

CVE-2025-22243

broadcom vmware_nsx Security Advisory (CVE-2025-22243)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-22243 impacting broadcom vmware_nsx. Evaluated with CVSS Base Score of 7.5 (HIGH).

Original NVD Description

Source: NIST NVD
VMware NSX Manager UI is vulnerable to a stored Cross-Site Scripting (XSS) attack due to improper input validation.

📊 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
High (PR:H)
Administrative credentials required
User Interaction
Required (UI:R)
User must click or open resource
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product broadcom / vmware_nsx
Affected Versions *
Weakness Enumeration CWE-79

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-2025-22243 impacting broadcom vmware_nsx.

⚡ Nuclei Detection Template (YAML) cve-2025-22243.yaml
id: cve-2025-22243

info:
  name: broadcom vmware_nsx - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2025-22243 affecting broadcom vmware_nsx.
    Evaluation: VMware NSX Manager UI is vulnerable to a stored Cross-Site Scripting (XSS) attack due to improper input validation....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-22243
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H
    cvss-score: 7.5
    cve-id: CVE-2025-22243
    cwe-id: CWE-79
  tags: cve,cve-2025-22243,broadcom,vmware_nsx,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "vmware_nsx"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-22243.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-22243
# Target: broadcom vmware_nsx | CVSS: 7.5 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-22243 (broadcom vmware_nsx)...")
    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 broadcom vmware_nsx 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-2025-22243.sh
# Recommended Remediation & Patching Commands for CVE-2025-22243
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install vmware_nsx 2>/dev/null || \
sudo dnf upgrade vmware_nsx 2>/dev/null || \
sudo yum update vmware_nsx

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

# 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-2025-22243 in broadcom vmware_nsx?

Review vendor-specific security notices and update broadcom vmware_nsx 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-2025-22243?

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-2025-22243?

CVE-2025-22243 is classified with a CVSS 3.1 Base Score of 7.5 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.5
HIGH SEVERITY
CVE ID CVE-2025-22243
Weakness CWE-79
Vendor broadcom
Product vmware_nsx
Published 2025-06-04
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H