MEDIUM CVSS 6.5
Published: 2026-01-26

CVE-2025-57785

hiawatha.leisink hiawatha_webserver Security Advisory (CVE-2025-57785)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-57785 impacting hiawatha.leisink hiawatha_webserver. Evaluated with CVSS Base Score of 6.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
A Double Free in XSLT `show_index` has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to corrupt data which may lead to arbitrary code execution.

📊 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
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product hiawatha.leisink / hiawatha_webserver
Affected Versions 11.7
Weakness Enumeration CWE-415

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-2025-57785 impacting hiawatha.leisink hiawatha_webserver.

⚡ Nuclei Detection Template (YAML) cve-2025-57785.yaml
id: cve-2025-57785

info:
  name: hiawatha.leisink hiawatha_webserver - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-57785 affecting hiawatha.leisink hiawatha_webserver.
    Evaluation: A Double Free in XSLT `show_index` has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to corrupt data whi...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-57785
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    cvss-score: 6.5
    cve-id: CVE-2025-57785
    cwe-id: CWE-415
  tags: cve,cve-2025-57785,hiawatha.leisink,hiawatha_webserver,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "hiawatha_webserver"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-57785.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-57785
# Target: hiawatha.leisink hiawatha_webserver | CVSS: 6.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-57785 (hiawatha.leisink hiawatha_webserver)...")
    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 hiawatha.leisink hiawatha_webserver scope (11.7).")
        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-2025-57785.sh
# Recommended Remediation & Patching Commands for CVE-2025-57785
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install hiawatha_webserver 2>/dev/null || \
sudo dnf upgrade hiawatha_webserver 2>/dev/null || \
sudo yum update hiawatha_webserver

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

# 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-2025-57785 in hiawatha.leisink hiawatha_webserver?

Review vendor-specific security notices and update hiawatha.leisink hiawatha_webserver 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-2025-57785?

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-2025-57785?

CVE-2025-57785 is classified with a CVSS 3.1 Base Score of 6.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.5
MEDIUM SEVERITY
CVE ID CVE-2025-57785
Weakness CWE-415
Vendor hiawatha.leisink
Product hiawatha_webserver
Published 2026-01-26
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N