MEDIUM CVSS 6.4
Published: 2026-01-13

CVE-2025-59021

typo3 typo3 Security Advisory (CVE-2025-59021)
โ†— Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2025-59021?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-59021 impacting typo3 typo3. Evaluated with CVSS Base Score of 6.4 (MEDIUM).

Original NVD Description

Source: NIST NVD
Backend users with access to the redirects module and write permission on the sys_redirect table were able to read, create, and modify any redirect record without restriction to the userโ€™s own file-mounts or web-mounts. This allowed attackers to insert or alter redirects pointing to arbitrary URLs โ€“ facilitating phishing or other malicious redirect attacks. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.

๐Ÿ“Š 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
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
Low (C:L)
Partial information leakage
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

๐ŸŽฏ Affected Versions Matrix

Affected Product typo3 / typo3
Affected Versions *
Weakness Enumeration CWE-862

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-2025-59021 impacting typo3 typo3.

โšก Nuclei Detection Template (YAML) cve-2025-59021.yaml
id: cve-2025-59021

info:
  name: typo3 typo3 - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-59021 affecting typo3 typo3.
    Evaluation: Backend users with access to the redirects module and write permission on the sys_redirect table were able to read, create, and modify any redirect re...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-59021
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 6.4
    cve-id: CVE-2025-59021
    cwe-id: CWE-862
  tags: cve,cve-2025-59021,typo3,typo3,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "typo3"
        part: body
๐Ÿ PoC Exploit & Verification Probe (Python 3) poc_cve-2025-59021.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-59021
# Target: typo3 typo3 | CVSS: 6.4 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-59021 (typo3 typo3)...")
    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 typo3 typo3 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)
๐Ÿ›ก๏ธ Quick Patch & Remediation Script (Bash) patch_cve-2025-59021.sh
# Recommended Remediation & Patching Commands for CVE-2025-59021
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install typo3 2>/dev/null || \
sudo dnf upgrade typo3 2>/dev/null || \
sudo yum update typo3

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i typo3 2>/dev/null || rpm -qa | grep -i typo3

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

๐Ÿ›ก๏ธ 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.
โš ๏ธ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

โ“ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-59021 in typo3 typo3?

Review vendor-specific security notices and update typo3 typo3 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-2025-59021?

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-2025-59021?

CVE-2025-59021 is classified with a CVSS 3.1 Base Score of 6.4 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.4
MEDIUM SEVERITY
CVE ID CVE-2025-59021
Weakness CWE-862
Vendor typo3
Product typo3
Published 2026-01-13
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N