MEDIUM CVSS 6.3
Published: 2026-01-08

CVE-2025-14017

haxx curl Security Advisory (CVE-2025-14017)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2025-14017?
🔬 Search Writeups & Exploit Archive →

CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-14017 impacting haxx curl. Evaluated with CVSS Base Score of 6.3 (MEDIUM).

Original NVD Description

Source: NIST NVD
When doing multi-threaded LDAPS transfers (LDAP over TLS) with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally disable the feature for other threads as well.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
Required (UI:R)
User must click or open resource
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
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product haxx / curl
Affected Versions *
Weakness Enumeration NVD-CWE-Other

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-2025-14017 impacting haxx curl.

⚡ Nuclei Detection Template (YAML) cve-2025-14017.yaml
id: cve-2025-14017

info:
  name: haxx curl - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-14017 affecting haxx curl.
    Evaluation: When doing multi-threaded LDAPS transfers (LDAP over TLS) with libcurl,
changing TLS options in one thread would inadvertently change them globally
an...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-14017
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
    cvss-score: 6.3
    cve-id: CVE-2025-14017
    cwe-id: NVD-CWE-Other
  tags: cve,cve-2025-14017,haxx,curl,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "curl"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-14017.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-14017
# Target: haxx curl | CVSS: 6.3 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-14017 (haxx curl)...")
    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 haxx curl 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-2025-14017.sh
# Recommended Remediation & Patching Commands for CVE-2025-14017
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install curl 2>/dev/null || \
sudo dnf upgrade curl 2>/dev/null || \
sudo yum update curl

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

# 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-2025-14017 in haxx curl?

Review vendor-specific security notices and update haxx curl 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-2025-14017?

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-2025-14017?

CVE-2025-14017 is classified with a CVSS 3.1 Base Score of 6.3 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.3
MEDIUM SEVERITY
CVE ID CVE-2025-14017
Weakness NVD-CWE-Other
Vendor haxx
Product curl
Published 2026-01-08
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N