HIGH CVSS 7.6
Published: 2025-07-29

CVE-2025-28170

grandstream gxp1628_firmware Security Advisory (CVE-2025-28170)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-28170 impacting grandstream gxp1628_firmware. Evaluated with CVSS Base Score of 7.6 (HIGH).

Original NVD Description

Source: NIST NVD
Grandstream Networks GXP1628 <=1.0.4.130 is vulnerable to Incorrect Access Control. The device is configured with directory listing enabled, allowing unauthorized access to sensitive directories and files.

📊 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
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
Low (I:L)
Partial data modification possible
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product grandstream / gxp1628_firmware
Affected Versions *
Weakness Enumeration CWE-548

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-2025-28170 impacting grandstream gxp1628_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-28170.yaml
id: cve-2025-28170

info:
  name: grandstream gxp1628_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2025-28170 affecting grandstream gxp1628_firmware.
    Evaluation: Grandstream Networks GXP1628 &lt;=1.0.4.130 is vulnerable to Incorrect Access Control. The device is configured with directory listing enabled, allowi...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-28170
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
    cvss-score: 7.6
    cve-id: CVE-2025-28170
    cwe-id: CWE-548
  tags: cve,cve-2025-28170,grandstream,gxp1628_firmware,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "gxp1628_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-28170.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-28170
# Target: grandstream gxp1628_firmware | CVSS: 7.6 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-28170 (grandstream gxp1628_firmware)...")
    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 grandstream gxp1628_firmware 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-2025-28170.sh
# Recommended Remediation & Patching Commands for CVE-2025-28170
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install gxp1628_firmware 2>/dev/null || \
sudo dnf upgrade gxp1628_firmware 2>/dev/null || \
sudo yum update gxp1628_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i gxp1628_firmware 2>/dev/null || rpm -qa | grep -i gxp1628_firmware

# 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
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-28170 in grandstream gxp1628_firmware?

Review vendor-specific security notices and update grandstream gxp1628_firmware 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-2025-28170?

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-2025-28170?

CVE-2025-28170 is classified with a CVSS 3.1 Base Score of 7.6 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.6
HIGH SEVERITY
CVE ID CVE-2025-28170
Weakness CWE-548
Vendor grandstream
Product gxp1628_firmware
Published 2025-07-29
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L