MEDIUM CVSS 5.5
Published: 2026-06-05

CVE-2026-21038

samsung android_usb_driver Security Advisory (CVE-2026-21038)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-21038 impacting samsung android_usb_driver. Evaluated with CVSS Base Score of 5.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
Improper input validation in Samsung Android USB Driver for Windows prior to version 1.9.5.0 allows local attacker to access out-of-bounds memory.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
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
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product samsung / android_usb_driver
Affected Versions *
Weakness Enumeration CWE-125

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-2026-21038 impacting samsung android_usb_driver.

⚡ Nuclei Detection Template (YAML) cve-2026-21038.yaml
id: cve-2026-21038

info:
  name: samsung android_usb_driver - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-21038 affecting samsung android_usb_driver.
    Evaluation: Improper input validation in Samsung Android USB Driver for Windows prior to version 1.9.5.0 allows local attacker to access out-of-bounds memory....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-21038
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 5.5
    cve-id: CVE-2026-21038
    cwe-id: CWE-125
  tags: cve,cve-2026-21038,samsung,android_usb_driver,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "android_usb_driver"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-21038.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-21038
# Target: samsung android_usb_driver | CVSS: 5.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-21038 (samsung android_usb_driver)...")
    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 samsung android_usb_driver 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-2026-21038.sh
# Recommended Remediation & Patching Commands for CVE-2026-21038
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install android_usb_driver 2>/dev/null || \
sudo dnf upgrade android_usb_driver 2>/dev/null || \
sudo yum update android_usb_driver

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

# 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-2026-21038 in samsung android_usb_driver?

Review vendor-specific security notices and update samsung android_usb_driver 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-2026-21038?

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-2026-21038?

CVE-2026-21038 is classified with a CVSS 3.1 Base Score of 5.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.5
MEDIUM SEVERITY
CVE ID CVE-2026-21038
Weakness CWE-125
Vendor samsung
Product android_usb_driver
Published 2026-06-05
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N