CRITICAL CVSS 9.8
Published: 2021-02-09

CVE-2020-15798

siemens simatic_hmi_comfort_panels_firmware Security Advisory (CVE-2020-15798)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-15798 impacting siemens simatic_hmi_comfort_panels_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)

📊 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 siemens / simatic_hmi_comfort_panels_firmware
Affected Versions *
Weakness Enumeration CWE-306

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-2020-15798 impacting siemens simatic_hmi_comfort_panels_firmware.

⚡ Nuclei Detection Template (YAML) cve-2020-15798.yaml
id: cve-2020-15798

info:
  name: siemens simatic_hmi_comfort_panels_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2020-15798 affecting siemens simatic_hmi_comfort_panels_firmware.
    Evaluation: A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions &lt; V16 Update 3a), SIMATIC HMI KTP Mobile Pa...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-15798
  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-2020-15798
    cwe-id: CWE-306
  tags: cve,cve-2020-15798,siemens,simatic_hmi_comfort_panel,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "simatic_hmi_comfort_panels_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-15798.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-15798
# Target: siemens simatic_hmi_comfort_panels_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-2020-15798 (siemens simatic_hmi_comfort_panels_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 siemens simatic_hmi_comfort_panels_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-2020-15798.sh
# Recommended Remediation & Patching Commands for CVE-2020-15798
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install simatic_hmi_comfort_panel 2>/dev/null || \
sudo dnf upgrade simatic_hmi_comfort_panel 2>/dev/null || \
sudo yum update simatic_hmi_comfort_panel

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

# 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-2020-15798 in siemens simatic_hmi_comfort_panels_firmware?

Review vendor-specific security notices and update siemens simatic_hmi_comfort_panels_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-2020-15798?

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-2020-15798?

CVE-2020-15798 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-2020-15798
Weakness CWE-306
Vendor siemens
Product simatic_hmi_comfort_panels_firmware
Published 2021-02-09
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H