LOW CVSS 2.5
Published: 2025-08-19

CVE-2025-9165

libtiff libtiff Security Advisory (CVE-2025-9165)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-9165 impacting libtiff libtiff. Evaluated with CVSS Base Score of 2.5 (LOW).

Original NVD Description

Source: NIST NVD
A flaw has been found in LibTIFF 4.7.0. This affects the function _TIFFmallocExt/_TIFFCheckRealloc/TIFFHashSetNew/InitCCITTFax3 of the file tools/tiffcmp.c of the component tiffcmp. Executing manipulation can lead to memory leak. The attack is restricted to local execution. This attack is characterized by high complexity. It is indicated that the exploitability is difficult. The exploit has been published and may be used. There is ongoing doubt regarding the real existence of this vulnerability. This patch is called ed141286a37f6e5ddafb5069347ff5d587e7a4e0. It is best practice to apply a patch to resolve this issue. A researcher disputes the security impact of this issue, because "this is a memory leak on a command line tool that is about to exit anyway". In the reply the project maintainer declares this issue as "a simple 'bug' when leaving the command line tool and (...) not a security issue at all".

📊 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
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product libtiff / libtiff
Affected Versions 4.7.0
Weakness Enumeration CWE-401

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-2025-9165 impacting libtiff libtiff.

⚡ Nuclei Detection Template (YAML) cve-2025-9165.yaml
id: cve-2025-9165

info:
  name: libtiff libtiff - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2025-9165 affecting libtiff libtiff.
    Evaluation: A flaw has been found in LibTIFF 4.7.0. This affects the function _TIFFmallocExt/_TIFFCheckRealloc/TIFFHashSetNew/InitCCITTFax3 of the file tools/tiff...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-9165
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
    cvss-score: 2.5
    cve-id: CVE-2025-9165
    cwe-id: CWE-401
  tags: cve,cve-2025-9165,libtiff,libtiff,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "libtiff"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-9165.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-9165
# Target: libtiff libtiff | CVSS: 2.5 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-9165 (libtiff libtiff)...")
    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 libtiff libtiff scope (4.7.0).")
        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-2025-9165.sh
# Recommended Remediation & Patching Commands for CVE-2025-9165
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install libtiff 2>/dev/null || \
sudo dnf upgrade libtiff 2>/dev/null || \
sudo yum update libtiff

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

# 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.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-9165 in libtiff libtiff?

Review vendor-specific security notices and update libtiff libtiff 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-2025-9165?

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-2025-9165?

CVE-2025-9165 is classified with a CVSS 3.1 Base Score of 2.5 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
2.5
LOW SEVERITY
CVE ID CVE-2025-9165
Weakness CWE-401
Vendor libtiff
Product libtiff
Published 2025-08-19
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L