HIGH CVSS 7.1
Published: 2026-06-09

CVE-2026-24349

siemens simatic_wincc_unified_pc_runtime Security Advisory (CVE-2026-24349)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-24349 impacting siemens simatic_wincc_unified_pc_runtime. Evaluated with CVSS Base Score of 7.1 (HIGH).

Original NVD Description

Source: NIST NVD
A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMATIC WinCC Unified PC Runtime V18 (All versions), SIMATIC WinCC Unified PC Runtime V19 (All versions), SIMATIC WinCC Unified PC Runtime V20 (All versions), SIMATIC WinCC Unified PC Runtime V21 (All versions < V21 Update 2). Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
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
Changed (S:C)
Impacts components beyond caller authority
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 / simatic_wincc_unified_pc_runtime
Affected Versions *
Weakness Enumeration CWE-313

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-2026-24349 impacting siemens simatic_wincc_unified_pc_runtime.

⚡ Nuclei Detection Template (YAML) cve-2026-24349.yaml
id: cve-2026-24349

info:
  name: siemens simatic_wincc_unified_pc_runtime - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-24349 affecting siemens simatic_wincc_unified_pc_runtime.
    Evaluation: A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMAT...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-24349
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 7.1
    cve-id: CVE-2026-24349
    cwe-id: CWE-313
  tags: cve,cve-2026-24349,siemens,simatic_wincc_unified_pc_,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "simatic_wincc_unified_pc_runtime"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-24349.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-24349
# Target: siemens simatic_wincc_unified_pc_runtime | CVSS: 7.1 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-24349 (siemens simatic_wincc_unified_pc_runtime)...")
    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_wincc_unified_pc_runtime 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-2026-24349.sh
# Recommended Remediation & Patching Commands for CVE-2026-24349
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install simatic_wincc_unified_pc_ 2>/dev/null || \
sudo dnf upgrade simatic_wincc_unified_pc_ 2>/dev/null || \
sudo yum update simatic_wincc_unified_pc_

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

# 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-2026-24349 in siemens simatic_wincc_unified_pc_runtime?

Review vendor-specific security notices and update siemens simatic_wincc_unified_pc_runtime 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-2026-24349?

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-2026-24349?

CVE-2026-24349 is classified with a CVSS 3.1 Base Score of 7.1 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.1
HIGH SEVERITY
CVE ID CVE-2026-24349
Weakness CWE-313
Vendor siemens
Product simatic_wincc_unified_pc_runtime
Published 2026-06-09
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N