LOW CVSS 3.1
Published: 2025-08-15

CVE-2025-9019

broadcom tcpreplay Security Advisory (CVE-2025-9019)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-9019 impacting broadcom tcpreplay. Evaluated with CVSS Base Score of 3.1 (LOW).

Original NVD Description

Source: NIST NVD
A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function mask_cidr6 of the file cidr.c of the component tcpprep. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The researcher is able to reproduce this with the latest official release 4.5.1 and the current master branch. The code maintainer cannot reproduce this for 4.5.2-beta1. In his reply the maintainer explains that "[i]n that case, this is a duplicate that was fixed in 4.5.2."

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
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
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 broadcom / tcpreplay
Affected Versions 4.5.1
Weakness Enumeration CWE-119

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-2025-9019 impacting broadcom tcpreplay.

⚡ Nuclei Detection Template (YAML) cve-2025-9019.yaml
id: cve-2025-9019

info:
  name: broadcom tcpreplay - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2025-9019 affecting broadcom tcpreplay.
    Evaluation: A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function mask_cidr6 of the file cidr.c of the component tcpprep. The...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-9019
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
    cvss-score: 3.1
    cve-id: CVE-2025-9019
    cwe-id: CWE-119
  tags: cve,cve-2025-9019,broadcom,tcpreplay,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "tcpreplay"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-9019.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-9019
# Target: broadcom tcpreplay | CVSS: 3.1 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-9019 (broadcom tcpreplay)...")
    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 broadcom tcpreplay scope (4.5.1).")
        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-2025-9019.sh
# Recommended Remediation & Patching Commands for CVE-2025-9019
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install tcpreplay 2>/dev/null || \
sudo dnf upgrade tcpreplay 2>/dev/null || \
sudo yum update tcpreplay

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

# 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-2025-9019 in broadcom tcpreplay?

Review vendor-specific security notices and update broadcom tcpreplay 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-2025-9019?

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-2025-9019?

CVE-2025-9019 is classified with a CVSS 3.1 Base Score of 3.1 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
3.1
LOW SEVERITY
CVE ID CVE-2025-9019
Weakness CWE-119
Vendor broadcom
Product tcpreplay
Published 2025-08-15
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L