HIGH CVSS 7.5
Published: 2020-12-14

CVE-2020-25235

siemens logo\!_8_bm_firmware Security Advisory (CVE-2020-25235)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-25235 impacting siemens logo\!_8_bm_firmware. Evaluated with CVSS Base Score of 7.5 (HIGH).

Original NVD Description

Source: NIST NVD
A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). The password used for authentication for the LOGO! Website and the LOGO! Access Tool is sent in a recoverable format. An attacker with access to the network traffic could derive valid logins.

📊 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
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product siemens / logo\!_8_bm_firmware
Affected Versions *
Weakness Enumeration CWE-522

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-2020-25235 impacting siemens logo\!_8_bm_firmware.

⚡ Nuclei Detection Template (YAML) cve-2020-25235.yaml
id: cve-2020-25235

info:
  name: siemens logo\!_8_bm_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2020-25235 affecting siemens logo\!_8_bm_firmware.
    Evaluation: A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions &lt; V8.3). The password used for authentication for the LOGO!...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-25235
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2020-25235
    cwe-id: CWE-522
  tags: cve,cve-2020-25235,siemens,logo\!_8_bm_firmware,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "logo\!_8_bm_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-25235.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-25235
# Target: siemens logo\!_8_bm_firmware | 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-2020-25235 (siemens logo\!_8_bm_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 logo\!_8_bm_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-2020-25235.sh
# Recommended Remediation & Patching Commands for CVE-2020-25235
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install logo\!_8_bm_firmware 2>/dev/null || \
sudo dnf upgrade logo\!_8_bm_firmware 2>/dev/null || \
sudo yum update logo\!_8_bm_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i logo\!_8_bm_firmware 2>/dev/null || rpm -qa | grep -i logo\!_8_bm_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
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2020-25235 in siemens logo\!_8_bm_firmware?

Review vendor-specific security notices and update siemens logo\!_8_bm_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-2020-25235?

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-2020-25235?

CVE-2020-25235 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-2020-25235
Weakness CWE-522
Vendor siemens
Product logo\!_8_bm_firmware
Published 2020-12-14
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N