CRITICAL CVSS 9.8
Published: 2022-08-25

CVE-2022-36516

h3c gr-1200w_firmware Security Advisory (CVE-2022-36516)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2022-36516 impacting h3c gr-1200w_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function ap_version_check.

📊 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
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product h3c / gr-1200w_firmware
Affected Versions *
Weakness Enumeration CWE-787

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-2022-36516 impacting h3c gr-1200w_firmware.

⚡ Nuclei Detection Template (YAML) cve-2022-36516.yaml
id: cve-2022-36516

info:
  name: h3c gr-1200w_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2022-36516 affecting h3c gr-1200w_firmware.
    Evaluation: H3C GR-1200W MiniGRW1A0V100R006 was discovered to contain a stack overflow via the function ap_version_check....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2022-36516
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-36516
    cwe-id: CWE-787
  tags: cve,cve-2022-36516,h3c,gr-1200w_firmware,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "gr-1200w_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2022-36516.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2022-36516
# Target: h3c gr-1200w_firmware | CVSS: 9.8 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2022-36516 (h3c gr-1200w_firmware)...")
    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 h3c gr-1200w_firmware 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-2022-36516.sh
# Recommended Remediation & Patching Commands for CVE-2022-36516
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install gr-1200w_firmware 2>/dev/null || \
sudo dnf upgrade gr-1200w_firmware 2>/dev/null || \
sudo yum update gr-1200w_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i gr-1200w_firmware 2>/dev/null || rpm -qa | grep -i gr-1200w_firmware

# 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-2022-36516 in h3c gr-1200w_firmware?

Review vendor-specific security notices and update h3c gr-1200w_firmware 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-2022-36516?

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-2022-36516?

CVE-2022-36516 is classified with a CVSS 3.1 Base Score of 9.8 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.8
CRITICAL SEVERITY
CVE ID CVE-2022-36516
Weakness CWE-787
Vendor h3c
Product gr-1200w_firmware
Published 2022-08-25
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H